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White-chested Emerald




  Name White-chested Emerald
  Regnum Animal ia
  Phylum Chordata
  Classis Aves
  Ordo Trochiliformes
  Familia Trochilidae
  Genus '' Agyrtria ''
  Species '''''A brevirostris'''''
  Binomial ''Agyrtria brevirostris''
  Binomial Authority ( Gould , 1859 )


The White-chested Emerald, ''Agyrtria brevirostris'', is a Hummingbird that breeds in eastern Venezuela , the Guiana s and Trinidad . It is sometimes placed in a different genus as ''Amazilia chionopectus''.

It is a widespread and common species in Trinidad, less so in Venezuela. It appears to be a local or seasonal Migrant , although its movements are not well understood. It is a Bird of cultivation and open woodland. The female lays her eggs in a small cup nest made of plant fibre and placed on a horizontal tree branch.

The White-chested Emerald is 8.9 cm long and weighs 4.7 g. The black bill is straight and fairly long, at nearly 2 cm. It has bright golden-green upperparts, becoming bronze on the tail, white underparts, and its flanks are green, or white spotted with green. The tail is tipped with purple-black. The sexes are similar.

White-chested Emeralds feed on nectar, usually taken from the flowers of large trees, but sometimes from smaller plants such as '' Heliconia ''. The also take small Insect s. The song of this species is a churring ''tche-tche-tche-tche-tche''.


REFERENCES


  • ''Birds of Venezuela'' by Hilty, ISBN 0-7136-6418-5

  • ''Birds of Trinidad and Tobago'' by ffrench, ISBN 0-7136-6759-1