The Vesper Sparrow is also known as a Bay-winged Bunting in Yellowstone Park.
The Horned Lark feeds in the grass.
The Vesper Sparrow is also known as a Bay-winged Bunting in Yellowstone Park.
The male Mountain Blue Bird is visible in the grass.
The bird is feeding in the weftlands grasses in Yellowstone.
The Vesper Sparrow is also known as a Bay-winged Bunting in Yellowstone Park.
The Vesper Sparrow is also known as a Bay-winged Bunting in Yellowstone Park.
The Vesper Sparrow is also known as a Bay-winged Bunting in Yellowstone Park.
See photo in original gallery.