Monday 31 May 2021

Rare birds and herps

 I've been fortunate to have encountered quite a few rare, threatened or endangered bird and reptile species lately. Of course in the part of the province, the chance of encountering such creatures is higher than many other parts of Ontario. Some are permanent residents, while other are regular breeding species. Still others are just passing through, or way off their usual migration route.

I've also been fortunate to have encountered them with some very good photographic conditions. A prime example is the Acadian Flycatcher, currently featured at the head of my blog and in a previous post. It continues to cooperate, and I have gotten some additional good photos while showing it to a park staff person.


On another occasion, I specifically went out to see if one of the breeding Prothonotary Warblers would be cooperative. I had photographed it on a couple of earlier occasions this month, but always from a distance. On this day, as I approached its breeding territory on the boardwalk, several other folks were trying to photograph something almost right over the boardwalk. As I cautiously approached, it was clear that a female Prothonotary was busily poking through some spider web material. After a few moments of this, it headed directly to the nest box about 25 metres away. Although the light wasn't ideal, I shot it anyway. It is slightly less brilliantly coloured than its male counterpart.

That was the only time she was out in our area, but the male flew in very close on several occasions. At times the light wasn't great, but at other times is was about as good as one could hope for. These next two examples of several photos I took are some of the best ones I think I have ever gotten! They were taken with the full frame 5D3 and the 500mm lens, and not cropped very much.

I was quite pleased with the photographic efforts so far, as I should be. Yet while I was arriving home, I got a text message from Steve that two Glossy Ibis had been reported at the end of Angler Line, a bit south of Mitchell's Bay, along Lake St. Clair. My plans to arrive home were delayed a bit, as I headed towards the spot.

None were visible at first, and even after Steve arrived we saw no sign of them. As we were pondering what to do next in our search, one flew up from behind some cattail vegetation, then another and then a third! They didn't land in a good spot for photography, but they moved around a bit more and eventually landed out on the open side of the cattails. It turned out there were four of them. They were still a bit farther away than we would have liked (a typical birder/photographer lament :-) but eventually we got some fairly good record shots. These are heavily cropped.


I still hadn't been at the right place at the right time to see any Whimbrel, in spite of spending the equivalent of several hours over several days looking out at the lake. The south beach was a likely spot, so Kevin and I headed out to check on whatever we could find out there. The south beach has always been one of my favourite spots in Rondeau, due to the sometimes wild weather conditions as well as the wide open view of the lake, bay and marsh. The narrow sandspit is a draw for birds. So off we went. We saw many of the more common shorebirds, including Ruddy Turnstone, Semipalmated Plover, Semipalmated Sandpiper, Sanderling, etc. And eventually we came across 28 Whimbrel, which at first were not giving us any good photo ops, but eventually they did.



There were hundreds of gulls, most of which were Ring-billed and Herring, but we also saw a Lesser Black-backed Gull, and a single Little Gull which we saw clearly but were not able to photograph until it headed out over the lake. This is a poor record shot.

We also had a very cooperative Eastern Tiger Swallowtail stop by to sip something from a small area of wet sand.

On the herp/reptile side of things, some of them are becoming more visible in the warmer and sunnier weather. Unfortunately this first one, an Eastern Hog-nose Snake, will not be with us any more. It is, quite sadly, quite dead. Some folks had seen it writhing around, and at first thought it may have just been going through some of its defensive antics the species is know for. It will wriggle and writhe, and play dead when it feels threatened and any escape route is not available. However this one was fighting for its life and breathing its last. It was disgorging two American Toads, the largest one is shown below. But after a few minutes it stopped moving. I was told about it (thanks, Mike!), and after I came off the trail I had been hiking, went to the spot and found it quite dead. The second photo shows a close-up of its upturned snout, from which it gets its name. There was some speculation that the snake had bitten off more than it could chew, and was choking on the two toads. It didn't make a lot of sense, since even though toads will inflate themselves when threatened to appear much too big for a snake to consume, this snake species has a couple of teeth towards the back of its mouth specifically designed to puncture a toad, deflate it and make it manageable. So I was interested to hear from Kevin that when he checked it out, he could tell that there were several parts of its rib cage and vertebrae that had been crushed. While there was no outward injury visible, which would have been the case had it been run over by a car, it is most likely that the snake was run over by a bicycle and did enough damage to effectively kill it. So sad, when you consider that it is a species at risk in Ontario, and quite a rare find at Rondeau since it occupies the pine-oak forest community and edges, which are some of the most developed parts of the park. And this one was a very mature individual which had the potential to add to its population for a few years yet.



A much more positive encounter was one I had with this Eastern Fox Snake, a species at risk, seen on Harrison Trail. I had just come back from birding, and noticed it quite motionless. I suspect it was hoping its pattern might make it less noticeable and that I would pass it by. After getting a few shots with my camera I did, and when I came back a few minutes later with a different lens combination hoping for some better photos, it had moved on.

Ontario's only lizard, the Five-lined Skink, is another species at risk, and occurs in various spots at Rondeau. While I was hiking along Tuliptree Trail, I noticed at least three of them meandering around a large fallen tree.
On another occasion, I came across an Eastern Ribbon Snake basking on the same tree trunk. It is also an official species at risk.
It looks very much like the much more common Eastern Garter Snake, but has a more defined black and yellow striping, as well as a small white spot in front of its eye.
So much to see and photograph!






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