a vesper sparrow in southeast arizona

vesper sparrow southeast arizona lincolns wing patches rufous colored evening dusk pastures open fields medium size world buffy brush sing twilight ground nest insect eater field eye ring brown streaky passerine passeriformes ornithology desert arizona songbird branch migratory north america grasslands passerellidae pooecetes gramineus nature wildlife sparrow vesper feather birdwatching birding bird beak avian animal