New World Warblers are small, colorful, passerines that are found only in the New World. They belong to the Order Passeriformes and the huge Family Parulidae with 27 Genera (see below). Most of the species with photos are in the Genus Dendroica and Vermivora. However, all of the Costa Rica species were in the “other genera” group.

Dendroica

Adelaide's Warbler, Dendroica adelaidae
Arrow-headed Warbler, Dendroica pharetra
Audubon's Warbler, Dendroica (coronata) auduboni
Barbuda Warbler, Dendroica subita
Bay-breasted Warbler, Dendroica castanea
Black-throated Blue Warbler, Dendroica caerulescens
Black-throated Gray Warbler, Dendroica nigrescens
Black-throated Green Warbler, Dendroica virens
Blackburnian Warbler, Dendroica fusca
Blackpoll Warbler, Dendroica striata
Cape May Warbler, Dendroica tigrina
Cerulean Warbler, Dendroica cerulea
Chestnut-sided Warbler, Dendroica pensylvanica
Elfin-woods Warbler, Dendroica angelae
Golden-cheeked Warbler, Dendroica chrysoparia
Goldman's Warbler,
Dendroica (coronata/auduboni) goldmani
Grace's Warbler, Dendroica graciae
Hermit Warbler, Dendroica occidentalis
Kirtland's Warbler, Dendroica kirtlandii
Magnolia Warbler, Dendroica magnolia
Myrtle Warbler, Dendroica (coronata) coronata
Olive-capped Warbler, Dendroica pityophila
Palm Warbler, Dendroica palmarum
Pine Warbler, Dendroica pinus
Plumbeous Warbler, Dendroica plumbea
Prairie Warbler, Dendroica discolor
St. Lucia Warbler, Dendroica delicata
Townsend's Warbler, Dendroica townsendi
Vitelline Warbler, Dendroica vitellina
Yellow Warbler and Mangrove Warbler, Dendroica petechia
Yellow-rumped Warbler, Dendroica coronata
Yellow-throated Warbler, Dendroica dominica

Vermivora
Lucy's Warbler Vermivora luciae
Orange-crowned Warbler Vermivora celata
Virginia’s Warbler Vermivora virginiae

Other genera in the family
Parulidae are:
Basileuterus
Cardellina
Wilson's Warbler Cardellina pusilla
Catharopeza
Ergaticus
Euthlypis
Geothlypis
Granatellus
Helmitheros
Icteria
Yellow-breasted Chat Icteria virens
Leucopeza
Limnothlypis
Microligea
Mniotilta
Myioborus
Slate-throated Whitestart Myioborus miniatus
Oporornis
Oreothlypis
Tennessee Warbler Oreothlypis peregrina
Parula
Flame-throated Warbler Parula gutturalis
Phaeothlypis
Buff-rumped Warbler Phaeothlypis fulvicauda
Protonotaria
Prothonotary Warbler Protonotaria citrea
Seiurus
Setophaga
Black-throated Green Warbler Setophaga virens
Chestnut-sided Warbler Setophaga pensylvanica
Teretistris
Wilsonia
Xenoligea
Zeledonia