Chestnut-sided Warbler (Dendroica pennsylvanica) Photographed in Costa Rica, by Jim Rosso The bird on the left has immature plumage. The bird had probably been born in the United States and was spending its first winter in Costa Rica. The bird on the bottom is in spring plumage. Songbirds Natural History Notes Birds in the Classroom The Bird Groups Back to Home Glossary Themes Bibliography Other members of the genus Dendroica: Palm Warbler Yellow Warbler Magnolia Warbler Blackburnian Warbler Yellow-throated Warbler Townsend's Warbler Black-throated Gray Warbler Yellow-rumped Warbler Prairie Warbler Hermit Warbler Black-throated Green Warbler Blackpoll Warbler
Other members of the genus Dendroica: Palm Warbler Yellow Warbler Magnolia Warbler Blackburnian Warbler Yellow-throated Warbler Townsend's Warbler Black-throated Gray Warbler Yellow-rumped Warbler Prairie Warbler Hermit Warbler Black-throated Green Warbler Blackpoll Warbler
