The Butterfly Hunt: 2010

The air now carries the remains of summer’s warmth and the early coolness of fall. It is pleasant, but the place I live in is devoid of natural woods and shrubs. Whatever grows are horticulture plants or weeds on wastelands providing ecological services to the scarce but valuable biodiversity predominated by bumble bees, bottle flies and cabbage whites. Soon the landscape will transform into myriad of colors, from violet to red, but this time it’s the leaves. Thence the diversity will drop, hitting the lowest in January as winter grips onto southwestern Ontario. By March, green shoots will sprout from bare branches. Sign of life. As days roll by, the very first butterfly will make its appearance in the open, basking in the early spring sun. It will be a tattered Mourning Cloak – one of the butterflies that overwinter for months only to greet the season of spring – and will continue its lifecycle by laying eggs for summer.
A Pearl Crescent decides to sip minerals off my finger
It has been six months since I saw the first Mourning Cloak in the month of March this year, marking the beginning of my quest to photograph as many species of North American butterflies – specifically of southern Ontario – as possible. I managed to observe 31 species of butterflies at Long Point, Turkey Point, Port Rowan and Manitoulin Island. I missed many species, which I will never get to see this year. This is what is so exciting about the biodiversity in summer. You get one chance. And you either see the butterfly disappear high in the canopy, or are fortunate to study it more closely.
A friendly Silvery Blue
There are about 750 species of butterflies recorded in Canada. To date, only one subspecies of the Large Marble, found only on southern Vancouver Island is believed to be extinct. It’s interesting to note that there were very few people in the past who studied butterflies carefully – and these were dedicated naturalists and lepidopterists. Fortunately, in the recent years, there is more awareness about the diversity of these delicate insects, with more and more researchers as well as amateur naturalists set to explore the subtle differences in their lifecycles, the response to climate change, distribution as well as species diversity. The Government of Canada has a web-page dedicated to Butterfly Conservation, and they ask an intriguing question – Why would anyone care if a butterfly species or even subspecies disappeared? It is because butterflies are as important to the ecosystem as bees. They are also the indicators of the health of a habitat, which is based not only on the presence of flowering plants for the adults to sip from, but on the presence of the host-plants for caterpillars to munch on. In Ontario, two species – Frosted Elfin and Karner Blue have been placed on the Ontario Endangered Species list, but they are probably already extirpated in the province.
Carolinian forests, as seen in Norfolk County where this photograph was taken, is an ideal habitat with rich undergrowth as well as dense canopy for butterflies
All of the species I photographed are common in the habitats they are found in. The habitats I explored was dominated by Carolinian woodlands – found in the eastern United States, and limited in Canada to extreme southern Ontario – altering into boreal forests as one travels toward Manitoulin Island. The Carolinian woods are semi-deciduous, rich habitats for flora and fauna. It is also the most exploited resource for agriculture and industries in Canada. It is characterized by tree species such as Ash trees, Black Oaks and maples. As one travels towards Manitoulin, the habitat gives way to conifer species. Although there is a significant change in the habitat of Long Point and Manitoulin Island, the butterfly diversity remains somewhat constant. Of the 31 species recorded, 14 species belong to family Nymphalidae, 7 species to Lycaenidae, 7 species to Hesperiidae, 2 species to Pieridae and 1 species to Papilionidae.
Graph showing number of species observed from five families
As it is clear from the graph, the diversity observed was higher for Nymphalidae (the largest family of butterflies), followed by Lycaenidae (second largest family), then by Hesperiidae, Pieridae and lastly Papilionidae. This trend is generally observed in the number of species occurring worldwide as well – with Nymphalidae having most number of species and Papilionidae having the least. The trend seen in the above graph could also probably be because of time and the place these butterflies were observed in. This is explained in the graph shown below.

Graph showing number of species of butterflies observed from May to September. Please note, May-June observations were made at Port Rowan, Turkey Point and Long Point; July-August observations were made on Manitoulin Island; September observations were made at Port Rowan and Turkey Point.
The above graph shows number of species of five families observed over a period of five months. It shows highest diversity in the month of June. May shows a rather lower diversity probably because of the coolness of late spring as well as low diversity of plants (it is also the month when most plants start to sprout). June shows a peak, which also showed a high temperature range compared to May. This not only helped adult butterflies to flutter around and feed on flowers but also helped the caterpillars because of the presence of larval host plants – as specifically observed for Monarch larval host plant Asclepias sp. The month of July shows lower diversity than August, this probably involves an error in my observations, since that is the month when I moved from Long Point to Manitoulin Island. August is the month that showed most diversity, probably because it is also an ideal month (and the warmest) for adults as well as larva to relish on the plants. Noticeably, the month of July also had less number of plants in flowering season as compared to August – this could have affected the observations since it is easier to see butterflies visiting flowers. The month of September has been relatively cooler than last year, which might explain why such a less number of species. There is also a bias in the data because these observations were made only in the first two weeks. What’s interesting however is the increase in the sightings of butterflies belonging to Pieridae. I sighted two species that were abundant –next only to the omnipresent Monarchs seen at Turkey Point during August and September.

I wish I also conducted a population count for these butterflies to see how the overall density rises and fall with the season, and to see if it rises or drops for ever species, depending on their time of emergence as well as on environmental factors. Let’s have a look at these butterflies one by one. Starting with the largest family Nymphalidae, I will descend to Papilionidae. All these families have distinct characteristics which are easy to observe on-field. I will recommend visiting Government of Canada’s CBIF website for more information on every species.

Nymphalidae: Marked by the presence of only four legs, this is because the first pair of legs is reduced to “brush” like structures – hence the butterflies of this family are commonly called Brush-footed butterflies.

1. Monarch, Danaus plexippus
An adult Monarch sips nectar from Goldenrod at Manitoulin Island
 
Monarch caterpillar feeding on Butterfly Milkweed, Asclepias tuberosa at Turkey Point
 
A Monarch Caterpillar feeding on Common Milkweed, Asclepias syriaca at Manitoulin Island
Monarchs are renowned for their great migration spanning over 3,000 kilometers. This migration begins with the sign of fall, as they move downwards on the map as temperatures drop. Point Peele National Park is well known to watch this butterfly congregate in huge numbers, from where they fly over Lake Erie and through America, as far as Texas. During early spring, they start flying northwards towards Canada. This migration, besides being associated with the temperature, is also related to the growth of the larval host plants.

2. Viceroy, Limenitis archippus
Viceroy is also famous for its mimicry of the Monarch. This mimicry is called Mullerian mimicry, where two or more harmful species share similar display patterns to deter predators. Like Monarchs however, Viceroy does not migrate. They are known to overwinter in larval stage.

3. Red Admiral, Vanessa atalanta

Red Admiral is a common butterfly of urban as well as woodlands. It is one of the last butterflies to be seen during fall.

 4. White Admiral, Limenitis arthemis arthemis
There are two subspecies of White Admiral, L a. arthemis, as seen here and L a astyanax. While both subspecies are seen in Ontario, I found L a. arthemis to be more common at Manitoulin Island than at Long Point.

5. Common Buckeye, Junonia coenia
According to CBIF, the migrating butterflies show up first in Southern Ontario in June and if colonies are established by egg-carrying females, they can last through several generations to early September. This explains why I saw a number of Common Buckeyes at Turkey Point in the first week of September.

6. American Lady, Vanessa virginiensis
This butterfly was more common at Manitoulin Island, seen basking on the south shore and occasionally feeding on Joe Pye weed.

7. Compton Tortoiseshell, Nymphalis vaualbum
According to CBIF, this butterfly is probably the longest-lived Canadian butterflies in the adult stage. The single brood appears in July/August, hibernates as an adult and can survive through until the following June. The only specimen I observed was mud-puddling on the alvars on the south shore of Manitoulin Island in July. This butterfly is also called False Comma, since it also bears the mark that looks sort-of like a ‘coma’, much similar to a species of butterfly called Coma.

8. Question Mark, Polygonia interrogationis
Question Mark butterfly showing the typical "question mark" on the under side of hind-wing
Upper side of Question Mark butterfly
The mark on the underside of the wing is a curve and a dot, resembling a Question mark – hence the name. It is known to be the largest of the Polygonia sp. found in Canada. They prefer wooded areas and forest clearings – often seen basking on the ground but when disturbed, they will fly high on the canopy and bask. They will however certainly come down to the ground to bask.
9. Atlantis Fritillary, Speyeria atlantis
Atlantis Fritillary showing upper side
Atlantis Fritillary laying eggs on an unidentified herb
It is only found north to Hudson Bay and absent in the extreme southwest, hence it is not surprising to find many of these at Manitoulin Island and none near Long Point. It was most common during the first two weeks of August than July, where adults were seen feeding on goldenrods on the alvars and one female was seen laying eggs.

10. Mourning Cloak, Nymphalis antiopa

This butterfly is one of those to overwinter for months, and fly again by mid-March in southern Ontario. It is fairly common during spring and late summer.

11. Pearl Crescent, Phyciodes tharos
Pearl Crescent butterfly photographed at Turkey Point
A pair of Pearl Crescent butterflies seen at Manitoulin Island
Pearl Crescent was one of the commonest butterflies seen throughout summer. It was commonly seen along grassy patches near Long Point and around rocky shores dominated by shrubs on Manitoulin Island.

12. Little Wood Satyr, Megisto cymela

It is a common butterfly seen basking in forest clearings on low shrubs or are seen fluttering about the dense woodlands of southern Ontario. Many of these were seen in late May and June. I did not come across any Little Wood Satyrs at Manitoulin, which was occupied more commonly by Common Wood Nymph.

13. Common Wood Nymph, Cercyonis pegala nephele

This subspecies is characterized by darker color compared to other subspecies. It was observed in good numbers at Manitoulin Island, frequently seen basking on shrubs as well as tall trees. Although named ‘wood nymph’ it was not seen in woodlands, but rather along forest edge.

14. Common Ringlet, Coenonympha tullia inornata

It is a butterfly commonly seen flying low on the ground near grassy habitats at Long Point. The subspecies C t. inornata is known to occur in most of eastern Canada. According to CBIF, it has been expanding southward for some years into southern Ontario. Based on this, I found this butterfly to be very common in and around Long Point.

Lycaenidae: Commonly referred as ‘Blues’ because the predominant color on the upper wings of these butterflies is blue. These are usually small butterflies, famous for their association with ants. The larvae possess glands that secret sugary substance that attracts ants, thus they bribe ants to protect them from potential predators. Some of the larval stages of the Blues are also known to prey on little insects such as mealy bugs and aphids.

1. Summer Azure, Celastrina neglecta

Only one specimen was observed in the first week of September. This is not surprising since according to CBIF, second- and third-generation are not rare in southern Ontario, considering the fact that the butterfly I saw belonged to this generations. It is a common butterfly in suburban as well as forested areas – preferring weedy fields.

2. Silvery Blue, Glaucopsyche lygdamus

A small lycaenid, there is only one subspecies couperi identified in Canada according to CBIF. It is known to occur all over Canada, except from southwestern Ontario where its southern limit is Ancaster. This is interesting, since I recorded it at Turkey Point, which is far south of Ancaster.

Comment from an expert from CBIF: This species has switched its main larval host plant to Cow Vetch (Viccia cracca) - an introduced legume, and this is allowing it to spread its range farther south into southwestern Ontario and also into the Northeastern United States.

It is interesting to observe good (or bad) effect on the biodiversity because of an introduced species.

3. Eastern tailed Blue, Everes comyntas

This butterfly was seen during early May and early September at Turkey Point. It was however more common during September. According to CBIF, it has two or three generations between May and October.

4. Coral Hairstreak, Satyrium titus

It is the only tailless Hairstreak in Canada. Only one specimen was seen in July at Manitoulin Island.

5. Bronzed Copper, Lycaena hallus
Bronze Copper showing under wings

Bronze Copper showing upper wings
It is a large Copper seen commonly during mid-June to mid-September. Only one specimen was observed at Port Rowan in June.

6. American Copper, Lycaena phlaeas
American Copper showing under wings
American Copper nectaring on an Asteraceae inflorescence, showing the upper wings
This butterfly is smaller than Bronze Copper. It was fairly common throughout Turkey Point in September.

7. Dorcas Copper, Lycaena dorcas
Dorcas Copper showing under wings
Dorcas Copper showing upper wings
There is a little confusion with the identification of this butterfly. It was commonly seen during the month of August on Manitoulin Island, seen basking and feeding on goldenrods along alvars.

Hesperiidae: These butterflies are supposedly a link between moths and butterflies – because of their superficial resemblance to moths. This however is debatable, since these butterflies, commonly referred to as ‘Skippers’ are similar to other butterfly families than moths. They are usually small, drab-looking butterflies known for their fast and rapid flight.

1. European Skipper, Thymelicus lineola

It was introduced in early 1900s probably via imported seeds of Timothy Grass. Only a few butterflies were seen around Long Point, but they surpassed the populations of any other butterfly on Manitoulin Island during July. They however ceased to exist in August, with not a single specimen seen around. This outburst of population is mostly because this is the only North American skipper whose eggs hibernate.

2. Least Skipper, Ancyloxypha numitor

It is a small skipper seen commonly in grassy areas in and around Long Point during June.

3. Hobomok Skipper, Poanes hobomok

This skipper was commonly seen in forest openings and edges at Long Point. It was more common in the month of June than May.

4. Leonard’s Skipper, Hesperia leonardus

There are two subspecies, leonardus occurs in the east and pawnee in eastern prairies. I am not sure which subspecies I recorded, but I’d go with leonardus, since it occurs in southern Ontario. Only one specimen was observed feeding on Goldenrods on the shores of Manitoulin Island.

5. Little Glassywing, Pompeius verna


I’m still unsure of the identification of this butterfly, which could either be P verna or Dun Skipper Euphyes vestris, since both share similar distribution in southern Ontario. It was seen around mid-week of July.

6. Juevnal’s Dusky Wing, Erynnis juvenalis
Juvenal's Duskywing, male
Juvenal's Duskywing, female
It was seen commonly during May to June at Long Point and the surrounding area. Many specimens observed preferred basking on sandy clearings and roads rather than on plants.

7. Silver-spotted Skipper, Epargyreus clarus (no photograph)
This is the largest resident Skipper in Canada (CBIF, 2010). Only two specimens were observed, one in early July and one in early September. I missed the opportunity to photograph this butterfly on both occasions! They were observed basking on the ground, but took to flight as soon as they sensed movement.

Pieridae: The butterflies of this family are commonly referred to as ‘Whites and Yellows’ or ‘Sulphurs’ because the predominant color in this family is white or yellow.

1. Cabbage White, Pieris rapae

Cabbage Whites are ubiquitous in Ontario, especially in disturbed habitats dominated by invasive weeds. It was introduced into North America in Quebec in 1860s (CBIF, 2010). According to CBIF, they become more common as summer progresses, this explains why I saw more number of this species in late August and early September.

2. Clouded Sulphur, Colias philodice

This was another common butterfly seen during August-end and early September. Many specimens were seen feeding on Butterfly Milkweed, and taking shelter in the grass.

Papilionidae: The butterflies of this family are commonly referred to as “Swallowtails” because most of these butterflies display a swallow-tail like extension of the hind-wing. They are usually large, brightly colored butterflies.

1. Eastern Tiger Swallowtail, Papilio glaucus

Many specimens – males and females, were seen during the months of May and early June in and around Long Point. These large swallowtails are seen flying high in the canopy, often visiting the ground to feed on flowers.

For many, butterflies are a mere delight. But what is their stand in this diverse world around – is it to please us with their elegant flight and brilliant colors? Of course not, and we know it. First thing that comes to mind when we think of butterflies is plants. Adult butterflies need nectar to fuel their flight, and by visiting flowers they not only refuel, but carry out nature’s own way of regeneration – by pollination and caterpillars require to feed in order to grow. It is therefore not hard to imagine that a butterfly’s life revolves around plants – from the time the egg is laid to the time the adult has to feed on nectar and lay the eggs again. This brings me to think about butterfly conservation. Conservation of butterflies is as complex as conserving tigers, only difference is that not many butterflies are as endangered as the tiger. To protect a tiger, we have to start from the grass roots. We need to conserve its habitat – formed by communities of plants and trees. Likewise for butterflies, we have to conserve these plant communities. Butterflies, like tigers, also face the danger of poaching, with many being hunt in tropical rainforests to be sold worldwide as precious ornamental items. This illegal trade can easily be brought to a stop if only the consumers began to appreciate the real beauty of butterflies in their natural habitat.
Monarchs feeding on Butterfly Milkweed
We can also help butterflies sustain the populations in cities by encouraging communities to transform their lawns into butterfly gardens. All you need to do is plant native flora – and the butterflies will make sure to visit you. The Butterfly Website lists native flora that will help you create your own butterfly garden. This recreational effort is also a step towards conservation – and let it be known, there are no small steps. Every step you take is a big effort.
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Please feel free to add the butterflies you observed anywhere in Ontario to this list in comments or make corrections if any of the identifications are wrong.

In Conversation with Sandhill Cranes

Grus canadensis, Sandhill Cranes on the lake
“I’m not sure if this is related to the [study of] environment …” said a colleague with a shrug. I was talking about the project I assisted for in the past two months. According to him, studying Sandhill Crane study is not a part of environmental studies, or I may simply say wildlife study is not related to environmental studies. So what is environmental studies – is it sitting in the labs measuring the amount of Carbon dioxide in the air, or the amount of heavy metals in the water, or environmental policies and laws that we study in our class? I never had to answer this question. Because I never separated these aspects of environmental studies from nature. A talk with the colleague revealed a great wisdom of academic knowledge, but he failed to impress me with his words I repeated above. I think, and I hope I am wrong, that he forgot what environmental studies is for – it is not for the sake of the pollutant we discover in air or water, it is for the sake of the air and water. Likewise, wildlife studies is not for the sake of a biologist – but for the sake of the environment. This is environmental studies, where wildlife, chemistry, physics, geography and literature are studied unbiased. Any imbalance and it is bound to take a toll on the way we define environment. I learnt about the environment more in the field than what I did in a classroom. I am going to talk about my observations here.

It was two months ago that I set out on a trip to Manitoulin Island. I have heard of this place before, but I never imagined I would ever have a chance to work there. It is the largest island surrounded by fresh-water in the world. I know I was going to assist on a project on Sandhill Cranes, where we had to capture, handle and assist in attaching GPS transmitters on the cranes. What I did not know, was that I was given an opportunity to study, observe, nurture my hobby of photography and learn to be patient. During the period of this study, it was not only Sandhill Cranes I had the opportunity to stare at for hours, but the diverse flora and fauna of the island, which I will discuss in the end.
An adult Sandhill Crane
Grus canadensis [Sandhill Crane] is a large bird, and you would know for sure once you see it. Although not as threatened as its cousin Grus americana [Whooping Crane], it was once hunted down to near extinction. Now due to restrictions on hunting as well as conservation measures taken in time, they are thriving throughout Canada – so much so that they are often given the status of a pest in some areas. But this success story does not hold true for G. americana. In this regard, Sandhill cranes were used as foster parents for Whooping Crane hatchlings, which however failed, since Whooping Cranes did not recognize other Whooping Cranes as their conspecifics. Yet, it was worth the try.
Sandhill Crane in flight
An adult Sandhill Crane will stand about three to four feet tall, and weigh nearly four to five kilograms. This bird, as large as it is, is also highly social, which is significant enough to call it an intelligent bird. But that’s not all. This bird is indeed very smart – because it has the ability to communicate – whether it is with a human or a coyote, or with a hatchling. This communication is not only about fear, fight or flight – as it is for all animals, but it is rather complex involving subtle interactions between each other, like that between social animals. I had the chance to observe these birds for hours at an end. During the period of July and most of August, I and my colleagues were able to interact with these birds. To trap birds, we need to understand them well – and to understand a bird, one must understand where it feeds. This helped us target certain farmlands, but the next problem was to bring them closer to the rocket-nets. We baited corn and barley near the nets, and waited. And waited. One week. Two weeks.
Sandhill Crane with a GPS and bird-band ready to be released. For our safety we had to hold them upside down.
The birds were not harmed at all.
On the first day of the third week, we caught one crane, tagged and released. This was a great achievement for us, but I would not say that the two weeks were wasted. Besides catching up on sleep while in the hideout, I also woke up to a Garter Snake sneaking inside by shirt, a skunk walking unknowingly into our blind, a field mouse that would sneak out from under the leaf litter and other bugs that I just adore. In these two weeks, and many other weeks where we observed absolute silence – only moving when there are more mosquitoes biting you than you can tolerate, we had to, literally, be one amongst the trees. Always watching. And by watching (and hearing), I learnt much about these cranes – a simple method used by field biologists for years.
At the roosting site
Sandhill Cranes are flamboyant hence failing to see them is hard, except if they are hatchlings, which are pretty good at camouflaging in the grasslands. This magnificent bird flaunts a ruby-colored crown, and a smear of rusty bronze adorns its otherwise fair feathers. The legs are dark in color, slender and tall – an efficient adaptation similar to every other bird associated with wetlands and grasslands. These legs are strong, capable of piercing flesh or causing a nasty gash if handled carelessly. The males and females are often difficult to tell apart, but often it is the males who are larger, and weigh more. If you see a pair of Sandhill Cranes flying, most often it is the males who lead; female follows slightly behind and then follows the immature crane. I am not sure who leads the flock of cranes, but my guess would be a male – for reasons similar to why a male leads the way in the pair. This is perhaps because the male is elder, knows more about the landscape, and is bolder (Bolder in the sense that a female has to incubate the egg, hence has to be more careful). Or perhaps, it is not always the male. An elder female crane might know just as well where to feed and to roost, hence this is debatable. In wild, telling a male and female might be difficult, but generally, if a bird appears larger than its counterpart, it is probably a male. Sexing these birds is difficult hence scientists have developed a method to make a concrete guess – by measuring the bodyweight, tarsal length, wing-cord length and the culmen length. [If the length is longer than the partner, then it’s a male.]
Sandhill Cranes, when alarmed, raise their heads and often walk while moving their head forward and backwards
These birds behave similar whether it’s a pair or a flock. It is always one of them who is watching – always cautious – as the others feed. This is an efficient way to feed, no doubt, given how weary these birds can be. But one alarm from the watchman and all the heads turn up. There is an awkward silence, like a lull before the storm as they watch intently. And then they call in chorus, like the trumpets ringing before a battle. This behavior is so fascinating, that I froze in awe and wondered if they saw me. Generally, they are very weary, hence slightest movement, whether it’s a falling branch or a coyote will turn their heads. Another behavior we observed was their response to the bait. Why wouldn’t you lure in, if you see a basket full of muffins and berries, if you like them? Similar question haunted us on our stay, since the cranes never looked interested in the pile of corn lying in the middle of a field. It was perhaps because they thought it was a mirage? No, but probably because they saw the camouflaged net lying next to the pile. Yet, there were cranes that happened to feast on this bait, but the chances were very low – which surprised us. When we observed more closely, it all depended on the alpha-male/female, who would – at first – cautiously close-in on the bait. Often they did not, and so didn’t the other cranes. This gives us an idea of how the social system of Sandhill Cranes is shaped, comparable to that of elephants and wolves.

You don’t always have to see these birds, since only listening to them can provide a great deal of information. They sound like trumpets, with every tune expressing a different mood. I was startled when I first heard them – so loud, so cheerful. After a few weeks, we learnt how to decipher them – and it’s easy. When we were hiding in our hideouts, I often could not see the cranes, but their presence was always known – thanks to my friends’ running commentary! But that’s not all; it was the cranes that made their presence felt. That loud flapping of wings as they swooped past our hideout in early mornings, that loud, shrill call – welcoming the morning sun. It was all a beyond-normal experience. These cranes talk. And they talk smart. We found this out by listening to them – and now we can tell when they are happy, alert or sad, we can also tell when a mother is calling for her baby, or a baby calling for its parents.

As interesting as it is, it is not difficult like song-birds at all. I was not surprised to decipher their language – to an extent – but after I came back, I hit the search button on Google and it produced several searches – some of them about the study of Sandhill crane calls. After going through it, I was surprised that I was right! They did speak a language that I understand! This was an achievement, personally, since I have never studied any animal so closely before that can talk.

In summary, the calls of the cranes are quite distinct. When they are happy, they give out a gallant call, mostly accompanied with flapping of wings, jumping, and chasing each other. When they are alarmed, they freeze – call in a high pitched tune at a random. This alarm call is comparable to the chorus of monkeys, when they sense danger – or that of wolves, when they howl. All of these animals do not call in unison, although they call together. They call one after the other, at different times using different tunes – this perhaps makes them seem to be greater in numbers, which might startle and intimidate the predator [but in case of wolves, it is a warning call for the neighboring clan]. When caught, which I consider to be their “sad” mood, they give out a gurgling call. The juvenile cranes call is rather different than the adult. The call is sweet, song like and pretty loud to catch the attention of the parents.
The eye of a majestic crane
All of this, within a span of seven weeks has taught me a lot about the ecology of Sandhill cranes. Unfortunately, I did not observe their mating behavior, since it was not the season, hence I will omit it, but it is worth observing for any species of Crane. Now I will tell you why these birds are pests. Pest is a status given when an organism causes economic damages. Whether it’s aphids, caterpillars, amphibians, birds or mammals. Sandhill Cranes are considered pests – in some parts – because they feed excessively on crops like barley and oats. The damages are economically extensive, driving the farmers crazy. For this reason, the government has granted permission [in the form of licenses] to hunt the cranes. The farmers usually are ignorant to the plight of this bird, but they shoot in order to save the crop. I am not against this, since they do damage the crops, and there needs to be some regulation, but how many are we going to shoot? This, apparently, is not addressed by the government.
A Sandhill Crane flock in Hay-field
Now if we look at the history of Sandhill Cranes, they were driven to near-extinction by habitat destruction for agriculture and urbanization, and hunting. In the past, though, they sprung back and are not threatened anymore. In the present, their populations are stable, but what if they go up in the future? Is hunting a solution? Or should we change the way we farm, in order to minimize the loss? Thereby living sustainably, for once! These questions will be answered in the project I worked for. I was more than just glad to be a part of it. I will possibly be able to share the report in a few years.

To learn more about the technical work for the Sandhill Cranes project, and to get a glimpse at the flora and fauna of Manitoulin Island, visit my online slideshow below: