I’ve seen this crow around the park off and on all summer and now that he seems to be acquiring his more adult plumage, the white in his wings is all that more dramatic.

Juvenile Crow
You can really see the white in the flight feathers as I just barely managed to catch him here on this cloudy day.

White flight feathers
There was a semi-leucistic Canada Goose with the flock in Butler Field this morning as well.

Partially Leucistic Canada Goose