Long-tailed Sylph (Aglaiocercus kingii)

Order: Apodiformes Family: Trochilidae IUCN Status: Least Concern

Age: Adult | Sex: Male | Loc. Northeast Peru

Age: Adult | Sex: Male | Loc. Northeast Peru

Age: Adult | Sex: Females | Loc. Northeast Peru & Southeast Peru

Age: Adult | Sex: Females | Loc. Northeast Peru

Identification & Behavior: ~17 cm (6.7 in) (male), 10.5 cm (4.1 in). (female). The male Long-tailed Sylph is all green with a reduced blue gorget. The tail is very long, deeply forked, and iridescent blue-green. The female is green above with a blue cap and a shorter iridescent green forked tail. The throat and breast are white with greenish specks. The center of the belly and vent areas are generally rufous. The female is similar to a female Booted Raquet-tail but is distinguished by the blue cap, rufous lower belly, and a green forked tail. The male Long-tailed Sylph is unmistakable in its range.

Status: The Long-tailed Sylph is uncommon in montane forests of the east slope of the Andes at elevations ranging between 1200-2500 m. It also occurs in Co, Ec, and Bo.

Name in Spanish: Silfo de Cola Larga.

Sub-species: Long-tailed Sylph (Aglaiocercus kingii mocoa), (DeLattre and Bourcier), 1846. C Andes of S Colombia (E Nariño), Ecuador and N Peru (to Cajamarca).
(Aglaiocercus kingii smaragdinus), Gould, 1846. E Andes of Peru (S from Amazonas) and WC Bolivia (to Cochabamba).

Meaning of Name: Aglaiocercus: Gr. Aglaia, aglaos =  splendor and kerkos=  tail. kingi: In honor of Philip Parker King (1791-1856) Royal Navy, surveyor in Australia 1817-1822 and tropical America 1825-1830, collector.

See more of the Family Trochilidae   peru aves

Distribution Map
long-tailed sylphVoice


    • Species range based on: Schulenberg, T. S., D. F. Stotz, and L. Rico. 2006. Distribution maps of the birds of Peru, version 1.0. Environment, Culture & Conservation (ECCo). The Field Museum.  http://fm2.fieldmuseum.org/uw_test/birdsofperu on 08/01/2015.