Yellow Warbler

From the U.S. Fish and Wildlife Service, Mountain-Prairie Region:

North America has more than 50 species of warblers. This yellow warbler, seen perching on shrub at Seedskadee NWR, is one of the species brighter varieties. It has a sweet whistle and is just one of the many types of wildlife you will see when you visit any of our #WildlifeRefuges.