The species displays sexual dimorphism with males and females differing in coloration. The males have iridescent green feathers on its body and a black tail while the female has a white tipped tail. They measure from 9 to 11 cm and weigh from 2.8 to 3.6 grams. This species is mainly found along the mountainous regions of Puerto Rico but it can also be found along the southwest coast of the main island. Puerto Rican Emeralds are highly territorial, often defending its territories with intense aereal pursuits.
Puerto Rican Emeralds feed on insects, spiders and nectar. They breed throughout the entire year but breeding is concentrated before the wet season starts from February to May. Eggs are extremely small, measuring 8 by 13 mm.
|Puerto Rican Emerald
Conservation status:Least concern
(Audebert & Vieillot, 1801)
List of endemic fauna of Puerto Rico
List of Puerto Rican birds
BirdLife International (2004). Chlorostilbon maugaeus. 2006 IUCN Red List of Threatened Species. IUCN 2006. Retrieved on 11 May 2006. Database entry includes justification for why this species is of least concern
(Spanish) Oberle, Mark (2003). Las aves de Puerto Rico en fotografías. Editorial Humanitas. ISBN 0-9650104-2-2.
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