![](https://birdviewing.com/wp-content/uploads/500/Blackburnian_warbler_turn_90_degree_DSC_0036-768x1068.jpg)
male, adult, winter plummage
I took this photo in Humber River Park. Lone bird flew to a nearby tree and perched upside down. I turned photo 90 degree in order to see better. With white tail feather, this is a male Blackburnian Warbler
Sep 5 2015