- Setophaga angelae
Upperside mostly black with white wing-bars, thin white eye-brow, broken white eye-ring, and white spots on ear-coverts and neck. Underparts are basically white with strong black stripes.
Immatures are more gray, and in even younger birds, with greenish colors replacing the black.
Elfin-woods Warbler was not discovered until 1971. It is endemic to Puerto Rico, where it is limited to two areas: eastern Puerto Rico where it is found in Luquillo Mountains, and in the west, where it is only found in the upper parts of Maricao State Forest.
It is considered threatened due to the small area of occurrence and the limited habitat. The two areas are 100 miles apart, and there is therefore very limited chance of gene flow from one area to the other.
Formerly placed in genus Dendroica.
The greatest chance of seeing them is in areas with dwarf forest, especially if vines are abundant.
Likes to glean insects from leaves and branches.
- Clements, J. F., T. S. Schulenberg, M. J. Iliff, B.L. Sullivan, C. L. Wood, and D. Roberson. 2012. The eBird/Clements Checklist of Birds of the World. 6th ed., with updates to October 2012. Ithaca: Cornell Univ. Press. ISBN 978-0801445019. Spreadsheet available at http://www.birds.cornell.edu/clementschecklist/downloadable-clements-checklist
- BirdForum Opus contributors. (2023) Elfin Woods Warbler. In: BirdForum, the forum for wild birds and birding. Retrieved 28 November 2023 from https://www.birdforum.net/opus/Elfin_Woods_Warbler
- The Elfin-Woods Warbler was the bird of the month of the Society for Conservation and study of Caribbean Birds in September 2006;this is a relatively complete presentation of the species.