What did Simon & Garfunkel sing? Something like, "All come looking for America" tree sparrow.
The American tree sparrow (Spizella arborea: means "finch pertaining to the trees") actually spends little time in trees, preferring to be near trees not necessarily in them. It also nests on or near the ground in a natural depression far north near the tundra and spends most of its year in Canada, so a better common name might be North American near trees sparrow. But that's a bit lengthy.