During migration, the Philadelphia area is inundated with yellow warblers that pass through the area on their way to points north. Some yellow warblers stay in the Delaware Valley to breed during the summer months.
The warbler section of any field guide is full of yellow birds. Warblers are a group of birds dominated by olive and yellow plumage.
Warblers are the also the most annoying birds to identify as they are often small, quick and hyperactive.
If you are trying to identify yellow birds and they aren’t the usual yellow bird species, try looking for your bird among the warblers.
Black-Throated Green Warbler (migrates through SE PA, breeds in other areas of PA, the female has yellow thought
Blackburnian Warbler (Dendroica fusca) migrates through SE PA, breeds in other ares of PA
Blue-winged Warbler (Vermivora pinus) breeds in SE PA
Golden-winged Warbler (Vermivora chrysoptera) migrates through SE PA, breeds in other areas of Pennsylvania
Cape May Warbler (Dendroica tigrina) migrates through Pennsylvania
Canada Warbler (Wilsonia candensis) – migrants through SE PA
Cerulean Warbler (Dendrioca cerulea) migrates through Philadelphia; female is yellowish
Chestnut-sided Warbler (Dendroica pensylvanica) miigrates through Philadelphia, breeds in some areas of SE PA and Pennsylvania
Common Yellowthroat (Geothlypis trichas) common summer breeder in Philadelphia area, rare to occasional winter visitor in the Coastal Plain
Connecticut Warbler (Oporornis agilis) migrates through Pennsylvania
Hooded Warbler (Wilsonia citrina) migrates through SE PA, breeds in central and western PA
Kentucky Warbler (Oprornis formosus) breeds in SE PA
Magnolia Warbler (Dendroica magnolia) migrates through SE PA, breeds in other areas of PA
Mourning Warbler (Oporornis philadelphia) migrates through SE PA, breeds in other areas of Pennsylvania
Nashville Warbler (Vermivora ruficapilla) migrates through SE Pennsylvania
Northern Parula (Parula americana) breeds the Philadelphia area
Orange-Crowned Warbler (Vermivora celata) migrates through Pennsylvania
Palm Warbler (Dendroica palmarum) migrates through Pennsylvania
Pine Warbler (Denrioica pinus) migrates through Philadelphia and migrates in other areas of Pennsylvania.
Prairie Warbler (Dendroica discolor) migrates through Philadelphia, breeds in other areas of PA
Prothonotary (Protonotaria citerea) migrates through Pennsylvania, breeds in small areas of PA
Tennessee Warbler (Vermivora peregrina) migrates through Pennsylvania; female has yellowish easy on breast
Wilson’s Warbler (Wilsonia pusilla) migrates through SE PA
Yellow-Breasted Chat (Icteria virens) – breeds in southern PA, rare and occasional visitor in the Coastal Plain (link)
Yellow-Rumped Warbler (Dendroica coronata) winters in SE PA, breeds in northern PA
Yellow-Throated Warbler (Dendroica dominica) breeds in SE PA
Yellow Warbler (Dendroica petechia) breeds throughout PA