- Setophaga adelaidae
Bluish-gray upperparts with two white wing-bars. Underside including throat yellow (except undertail coverts and abdomen, which are white); face shows a yellow eye-brow but a white sub-ocular crescent bordered in black. Bill dark but possibly with flesh-colored base, and with flesh-colored legs.
St. Lucia Warbler (not overlapping in range) is the most similar species. Looks similar to a female Northern Parula, but lacks the yellowish-green patch on its back and has a yellow eyebrow stripe. Other similar species are possible in migration.
Found entirely in Puerto Rico including Vieques Island.
Dry coastal scrublands and, to a lesser extent, moist lowland forests.
They nest at heights of 1 to 7 m and 2-4 white, brown spotted eggs are laid.
The diet includes insects.
- Clements, J. F., T. S. Schulenberg, M. J. Iliff, S. M. Billerman, T. A. Fredericks, B. L. Sullivan, and C. L. Wood. 2019. The eBird/Clements Checklist of Birds of the World: v2019. Downloaded from http://www.birds.cornell.edu/clementschecklist/download/
- Raffaele et al. 1998. Birds of the West Indies. Christopher Helm, London. ISBN 0713649054
- BirdForum Opus contributors. (2021) Adelaide's Warbler. In: BirdForum, the forum for wild birds and birding. Retrieved 19 October 2021 from https://www.birdforum.net/opus/Adelaide%27s_Warbler