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Adelaide’s Warbler

Adelaide’s Warbler (Dendroica adelaidae), is a bird endemic to the archipelago of Puerto Rico belonging to the Dendroica genus of the Parulidae family. Adelaide’s Warbler occurs in the main island of Puerto Rico and in the island municipality of Vieques. The species occurs mainly in dry forests in the southern region of Puerto Rico such as the Guánica State Forest, with some occurrences in the northern moist forests and the central mountain range, Cordillera Central. The species is named after Adelaide Swift, daughter of Robert Swift, the person who captured the first specimen.

Adelaide’s Warbler has gray upperparts with yellow underparts. The species has a yellow line above the eye and a white half-moon below it. Its average length is 4.75 inches and its average weight is 0.2 ounces.

Adelaide’s Warbler is an insectivore which gleans insects from the mid-top areas of the forest. It is also known to eat, although very rarely, spiders and small amphibians such as coquís. The species usually travels in mixed flocks which commonly include Puerto Rican Toddies, Vireos and other New World Warblers. Adelaide’s Warblers build nests at heights of 3 to 23 feet in which the female deposits anywhere from 2 to 4 white eggs. The eggs usually contain small brown spots.

Adelaide8217s Warbler


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