Observation notes: The butterfly had become trapped inside my window and was trying to escape. It was one of the first really warm days of spring (about 25 C), only three days after an unexpected major snowfall. My neighbourhood is near a river, and is fairly thickly covered by older elm trees.
Verified by: alchem30
Verified date: May 15, 2015
Coordinator notes: This is a specimen of Compton's Tortoiseshell. This species will hibernate over the winter and come out when the weather warms up. It does not require flowers as it will feed on tree sap and other decaying organic material. Hopefully it was able to get out into the woods and should be fine even with some cold days that followed.