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Genus Parula
Northern Parula - The Northern Parula, Parula americana, is a small New World warbler. It breeds in eastern North America from southern Canada to Florida.
Flame-throated Warbler - This species is a resident breeder with a range restricted to the mountains of Costa Rica and western Panama, where it occurs in the canopy, woodland edges, and clearings with trees typically from 2100 m up to the timberline. On the Caribbean slope in the wet season it may occur down to as low as 1400 m.
Tropical Parula - The Tropical Parula, Parula pitiayumi, is a small New World warbler. It breeds from southernmost Texas and northwest Mexico south through Central America to northern Argentina, including Trinidad and Tobago. This widespread and common species is not considered threatened by the IUCN.
Crescent-chested Warbler - The Crescent-chested warbler is similar to both the Northern Parula and the Tropical Parula, with yellow underparts, a gray head, and greenish back. Its definitive characteristic is a chestnut crescent on its breast, less prominent in the aforementioned species. Juvenile males look similar to the duller adult females, while juvenile females may lack the chestnut crescent.