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Hellstern's Sylph
File:Hellstern's Sylph.png
Scientific classification Red Pencil Icon
Kingdom: Animalia
Phylum: Chordata
Class: Aves
Superorder: Strisores
Order: Apodiformes
Family: Trochilidae
Subfamily: Lesbiinae
Tribe: Lesbiini
Genus: Aglaiocercus
Species: A. hellsterni
Binomial name
Aglaiocercus hellsterni
Hellstern, 2314

Hellstern's Sylph, Algaiocercus hellsterni is a species of hummingbird in the Trochilidae family. It is found in Devonshire and Shire. It is closely related to the Long-tailed Sylph and may have evolved from it.[alt. univ.]

It was named in honour of the author's grandmother.

Other names

Devonshire Sylph


The Hellstern's Sylph is mainly shiny green in colour. The upperparts range from light green to greenish-blue while the underparts are dark green. The crown is mainly blue to indigo. The tail is indigo to purple. Wings are bluish-green. Feet and bill are black and eyes are dark. Female is similar, but with a shorter tail.

The green, blue and purple are not pigments, but rather it's caused by iridescence, which are structural rather than chemical in nature, and is caused by interference.[2]

Similar species

Unlike the Long-tailed Sylph, it does not have a gorget spot and the sexes are similar.






Lives in open woods, forests, parks, gardens and mountains up to 2,000 m (6,600 ft). Found throughout Shire and Devonshire. A vagrant to Aquitani. Migrates to Africa, throughout the Congo and residential areas.


  1. ^ Future IUCN
  2. ^ Fogden, Michael; Taylor, Marianne; Williamson, Sheri L. and the forward by Dunne, Pete (2014). Hummingbirds: A Life-sized Guide to Every Species. Harper Design (An imprint of HarperCollins). ISBN 9780062280640. 

Based on...

It is based on a Long-tailed Sylph. The sexes being similar but with males having a longer tail is based on Scissor-tailed Flycatcher.

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