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Violet-tailed Sylph - BirdForum Opus

(Redirected from Aglaiocercus coelestis)
Photo © by C B Allen
Montezuma Rainforest Reserve, Los Chorros (Risaralda/Colombia),
9 November 2023
Aglaiocercus coelestis


Photo by rdavis
Northern Ecuador, October 2009

Female 9-10 cm, male up to 19 cm: medium sized hummingbird where male has a long tail.
Male has green upperside with crown and front blue, uppertail coverts bluish and tail blue to violet. Underside mostly fawn-colored with a violet-blue throat patch.
Female has much shorter tail, a similar upperside including the blue crown, while underside has rust on breast and belly, white upper breast and throat, where the upper throat is speckled with green, shiny spots.

Similar species

Photo by cfagyal
Tandayapa, Ecuador, September 2004

Overlaps in distribution with Long-tailed Sylph


South America: found in Colombia and Ecuador.



Two subspecies are recognized:

  • A.c. coelestis:
  • A.c. aethereus:


Subtropical Andean cloudforest, observed at heights of 5600 feet.


Readily comes to hummingbird feeders. In natural environments found low to medium in the forest but rarely in canopy.


  1. Clements, JF. 2009. The Clements Checklist of Birds of the World. 6th ed., with updates to December 2009. Ithaca: Cornell Univ. Press. ISBN 978-0801445019.
  2. BF Member observations

Recommended Citation

External Links

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