Location in Oregon
Blue is Winter range - Red is Summer range

Grasshopper Sparrow

Ammodramus savannarum - Common in hayfields and weedy fallow fields. The unstreaked breast is characteristic of adult. At close range note the yellow at bend of the wing, the yellow lores, and the unique back color. The tail is very short and narrow. Sings from a tall weed or utility line. When finished, the Grasshopper flies a short distance, then descends to the ground and disappears. The song is grasshopper-like: 2 or 3 ticks, then an insect-like trill, 4-8/min.