A few weeks ago I noticed this Yellow-rumped Warbler (Passeriformes: Parulidae: Setophaga coronata) resting in a tree here in southeast Michigan. As the weather warms these birds migrate from the southern half of North America to Canada, the northeastern US, and the Rocky Mountains. I suspect this individual was taking a break on its way northward.
In the spring these birds also molt into the striking breeding plumage shown here. Males sport black and white feathers punctuated by bright yellow on the head, sides, and as the common name implies, at the base of the tail.