Red-eyed Vireo

At least, I'm pretty sure it is, though you can't see any red eyes in any of my photos. These were taken  May 28.  At first glance, I thought it was a warbler, but this morning I happened to glance at this photo

and the word vireo popped into my head. A search through Sibley's assured me that Red-eyed was the only possibility for our area and the bird's appearance.

 

Unless of course, it is a warbler.

This is not our first Red-eyed Vireo, we first ID one at Sask Landing Park when we thought the robins were singing all day long, but they weren't. These are my first photos of them, however.