outline image. set of tits and bullfinches

animal art aves avian biology bird birdie birdwatching black bullfinch cartoon chirp city collurio contour cute doodle draw drawing fauna feather flight flit fly flycatcher forest funny garden graphic icon illustration ink insectivorous isolated lanius little major montanus naturalistic nature ornithology outline parus passeriformes passerine pencil pet picture plumage quick robin shrike silhouette sing sit sketch small songbird songster sparrow symbol tiny tit titmouse tomtit urban various vector warbler warbling wild wildlife wing wintering zonotrichia zoo zoology