It seems that the numbers and diversity of warblers seen on a daily basis is diminishing. There are currently 40 species of warbler on the Rondeau Provincial Park bird checklist. I recall back in the 1970s and 1980s (yes, I am aging myself) that getting at least 24 species of warbler in a day in mid-May was an average day, and it was sometimes possible to get 30 or more of those 40 species in a really good day. In the last few years, however, it seems difficult to get more than about 25 species in a day, and 20 is more the norm. Some days it is even hard to get 20. Of course the frequent east-northeast winds do not help to draw up the southern migrants or result in fallouts of warbler migrants like they used to.
Beyond the factors of wind speed and directions, I am sure there are other reasons for this apparent decline in warbler numbers and diversity, and that may be the subject of a future post.
The migration of 2016 so far has not been spectacular, but average, in my opinion. Nonetheless, it has been rewarding to spend time on the hunt for migrants, especially warblers. Here is a broad representation of what I've seen and in some cases, been able to photograph. Many of these images have been taken this year, but in some cases I have delved into my archives.
|Black-throated Green Warbler|
|Black-throated Blue Warbler|
|Black-throated Blue male (October photo)|
|Cape May Warbler|
|Pine Warbler (photo taken in January, 2015, coming to a feeder!)|
|Male PROW after having a bath, showing his white tail flashes|