willow warbler Definition

song thrush, winter wren, yellow warbler, chiffchaff, meadow pipit, willow tit, brown thrasher, ovenbird, spring peeper, marsh harrier, redstart, redshank, redwings, bullfinches, curlews, chaffinches, linnet, scarlet tanager, towhees, greenfinch, blackcap, northern parula, pine warbler, dickcissel, northern bobwhite, thrushes, dunlin, greenshank, reed bunting, wagtails, skylarks, pine siskin, auks, gray catbird, vesper sparrow, razorbills, belted kingfisher, nightjar, corncrakes, chipping sparrow, lapwings, yellowlegs, brown creeper, greater yellowlegs, pochard, eastern meadowlark, chaffinch, yellowthroat, indigo bunting, northern harrier, lesser yellowlegs, pectoral sandpiper, shrikes, bee eater, glaucous gull, tufted titmouse, common yellowthroat, sandpiper, bobolinks, siskins, pipits, ruddy turnstone, northern shrike, titmice, yellowhammer, bufflehead, flycatchers, goldeneyes, grosbeaks, spotted flycatcher, woodlark, kinglets, spruce grouse, golden plover, rusty blackbird, ringed plover, evening grosbeak, dowitchers, wood thrush, meadowlarks, kingbird, hermit thrush, fritillary, lesser scaup, phalaropes, willet, bellbirds, reed warbler, bitterns, parula, roseate spoonbill, waxwings, pileated, widgeon, oystercatchers, junco, teals, chough, avocet, marsh wren,