This beak is short.
Maybe a type of finch or sparrow.
http://www.pgc.pa.gov/Education/WildlifeNotesIndex/Pages/Finches-and-House-Sparrow.aspx
If you want to know a lot about birds in your area, the Cornell Ornithology Lab’s ‘All About Birds’ page is a great resource:
http://www.allaboutbirds.org/guide/search