White-vented Violetear

Amethystohrkolibri John Gould Henry Constantine Richter painted by

The Amethystohrkolibri or sometimes only Amethystohr ( Colibri serrirostris ) is a species of bird in the family of hummingbirds ( Trochilidae ). The species has a large distribution area, which includes the South American countries Brazil, Bolivia, Paraguay and Argentina. The stock is by the IUCN as " not at risk " ( Least concern ) classified.

Features

The male Amethystohrkolibri reaches a body length of about 12.5 inches, while the female is only about 11 inches tall. The male is about 7 grams, while the female with about 6 grams is a little easier. The top and the wing-coverts of the male are dark green with a slight blue tinge. The scaly throat shines bright green and sets out clearly from the blue- green underside. On ear he has a amethyst spots. The wings are schwärzlichpurpurn. The approximately 47 millimeters long blue-green tail has a subterminal blue napkin. The under tail ceiling is white. The beak and feet are black. The female is similar, but slightly smaller and less intensely colored than the male. The lower belly part is gray. The rear back is criss-crossed by gray seams. The outer feathers have gray white tips.

Distribution and habitat

The range extends from Bolivia via the central Paraguay to the south and east of Brazil in the states of Mato Grosso, Goiás, Bahia and Espírito Santo, and up to the Northwest of Argentina in the south of the province of Córdoba. In the heyday of one often meets them to eucalyptus and kapok trees.

Behavior

The hummingbird is not territorial and travels. So it is not normally found outside the breeding season in its typical breeding areas. Especially in the evening, he was sitting like the flycatcher on a branch, it starts from where its hunt for insects. Its cup-shaped nest it builds on the side of the vertical branches of a shrub or in a tree fork. It consists predominantly of the winged seeds of composite flowers and tree cotton. This he intertwines with cobwebs and a few leaves or parts bloom cladding. In one experiment, the scientists Paolo Ioala and Floriano Papi have shown that the Amethystohrkolibri may differ in olfactory perception between different odors such as lavender, jasmine, eucalyptus, amyl acetate, turpentine and no odor.

Naming

Vieillot originally used the name Trochilus serrirostris. The name serrirostris is made up of the words serra ( = saw) and rostrum ( = beak ) and refers to the distinctly serrated tip of the beak.