The Venezuelan sylph (Aglaiocercus berlepschi) is a small bird in the hummingbird family, Trochilidae. It is restricted to a small area of north-eastern Venezuela and is classed as an endangered species by BirdLife International. It is sometimes considered to be a subspecies of the long-tailed sylph (A. kingi).
The male is 22 cm (8.7 in) in length with the elongated outer tail-feathers accounting for 14–15 cm (5.5–5.9 in). Its plumage is mostly iridescent green. The throat is blue and the outer tail-feathers are violet, becoming blue towards the tips. The female is 9.5–11 cm (3.7–4.3 in) long. The tail is shorter than that of the male but still fairly long and slightly forked. Females have a blue crown and white throat, breast and belly.
The long-tailed sylph is similar in appearance but does not overlap in range. Males of the subspecies caudatus have a mostly blue tail and no blue throat patch while males of the subspecies margarethae have green tips to the tail-feathers. Females have a rufous breast and belly.
The Venezuelan sylph occurs in Sucre, Monagas and Anzoátegui states. It is found in the Cordillera de Caripe and Cerro Negro and there are unconfirmed reports from the Paria Peninsula. It inhabits forest and scrubland on coastal mountain slopes from 1,450 to 1,800 m (4,760 to 5,910 ft) above sea-level. It is threatened by the loss and degradation of its habitat.
- BirdLife species factsheet for Aglaiocercus berlepschi
- de Schauensee, Rodolphe Meyer; Phelps, William H. (1978). A Guide to the Birds of Venezuela. Princeton University Press.
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- Aglaiocercus berlepschi on Avibase
- Venezuelan sylph videos, photos, and sounds at the Internet Bird Collection
- Venezuelan sylph species account at NeotropicalBirds (Cornell University)