Grünbürzel-Sperlingspapagei

Bestimmung

The green-rumped parrotlet is 12 cm (4.7 in) long and weighs 20–28 g (0.71–0.99 oz). The plumage mainly bright green with duller/grayer napes. The eyes are dark brown and beaks and feet are light peach. Green-rumped parrotlets exhibit sexual dimorphism: males have purplish-blue primaries, secondaries, and coverts, with bright turquoise feathers on the leading edges of their wings; females lack blue but have more yellow-green on the head. Like all parrots, green-rumped parrotlets exhibit zygodactyly, meaning two toes face forward and two face backward. Juveniles look like adults.<p>The male of subspecies F. p. cyanophanes has more extensive purple-blue markings that form an obvious patch on the closed wing. The male of F. p. viridissimus has darker purple-blue markings on the secondaries. The male of F. p. cyanochlorus has darker purple-blue markings than the nominate species; the female is brighter yellow-green. The male of F. p. deliciosus compared to the nominate has the back and rump that is brighter emerald green that is tinted with pale blue; the primaries and secondaries pale blue with purple-blue near feather shafts. The forehead of the female is more yellow.

Taxonomie

The green-rumped parrotlet was formally described in 1758 by the Swedish naturalist Carl Linnaeus in the tenth edition of his Systema Naturae. He placed it with all the other parrots in the genus Psittacus and coined the binomial name Psittacus passerinus. Linnaeus specified the type location as "America", but this was changed to Surinam by Hans von Berlepsch in 1908. The green-rumped parrotlet is now one of nine species placed in the genus Forpus that was introduced in 1858 by the German zoologist Friedrich Boie. The etymology of the genus name is uncertain. The specific epithet passerinus is from Latin and means "sparrow-like".<p>Five subspecies are recognised:

Wissenschaftlicher Name

Forpus passerinus

Autorität

(Linnaeus, 1758)

Ordnung

Psittaciformes

Familie

Psittacidae

Gattung

Forpus

Verbreitung und Lebensraum

Green-rumped parrotlets are found in tropical South America, from the Caribbean regions of Colombia, Venezuela and Trinidad south and east to the Guianas and Brazil on the lower Amazon River. It has been introduced in Jamaica, Curaçao, Barbados and Tobago, and was not recorded on Trinidad prior to 1916. Along with the lilac-tailed parrotlet (Touit batavicus), they are the only parrotlet species to occur in the West Indies.<p>Green-rumped parrotlets are fairly common in open, semi-arid habitat and are found residing in dry scrubland, deciduous woodland, gallery forest, farmland, forest edges, and deforested areas throughout their range. While they are non-migratory, they may wander locally to locate sources of food. They are not found at altitudes greater than 1,800 metres (5,900 ft) above sea level.

Zugverhalten

Standvogel

Verhalten

Zugverhalten: Standvogel.

Schutzstatus

Bestandstrend: rückläufig.

Bestandstrend

rückläufig