Yellow-billed pintail

Geelsnavel pijlstaart (chili)

Yellow-billed pintail (Anas georgica)

De Yellow-billed pintail (Anas georgica) is een dabbling duck uit de familie van de water birds that includes ducks, geese, and swans (Anatidae).

Naamgeving

Nederlandse naam:
Geelsnavel pijlstaart (chili)
Engelse naam:
Yellow-billed pintail
Duitse naam:
Spitzschwanzente
Franse naam:
Canard à queue pointue
Wetenschappelijke naam:
Anas georgica

Taxonomische indeling

Orde:
Anseriformes
Familie:
Anatidae
Onderfamilie:
Anatinae
Geslacht:
Anas

Beschrijving

Uiterlijke kenmerken:

Anas georgica spinicauda

Male:
Has a brown head and neck. The bill is yellow with a black tip and a black stripe down the middle. The tail is brownish and pointed. The upper wing is grayish-brown, and the secondaries are blackish-green. The rest of the body is buffish brown with varying size black spots.

Female:
The female is almost similar to male. She has duller yellow bill with pale grey to black tip, and duller dark brown speculum. The underparts can be slightly whiter..

Juvenile:
Resembles female but it has streaked breast and underparts. And slightly less red brown.

Anas georgica georgica

Male:
As (A.g. spinicauda ),But smaller stockier. Overall plumage considerably darker, more red brown, and heavily spotted, especially on underparts, with belly little differentiated from breast and flanks. Head rounder, with shorter bill slightly up turned. 

Female:
The female is almost similar to male. She has duller yellow bill with pale grey to black tip, and duller dark brown speculum. The underparts can be slightly whiter.

Juvenile: Resembles female but it has streaked breast and underparts. And slightly less red brown.

Maten en Gewicht

Lengte man:
De man (woerd) van de Yellow-billed pintail heeft een lichaamslengte van ongeveer 43-55 centimeters. De vrouw (pop) heeft een lichaamslengte van ongeveer 43-55 centimeters.
Gewicht man:
Het mannetje weegt ongeveer 610-660 gram. Het vrouwtje weegt ongeveer 460-610 gram.
Het gewicht is notoir variabel en kan alleen als indicatie worden gebruikt!
Ondersoorten:

Known subspecies:

  • Anas georgica georgica: South Georgia I.
  • Anas georgica niceforoi: Formerly Andes of Colombia. Extinct ca 1952
  • Anas georgica spinicauda: Highlands of s Colombia to Tierra del Fuego and Falkland Islands
Habitat:

They should be provided with cover (including marginal pond cover) and loafing areas as well as water. A pen which is 50% water is suggested. The water may be shallow (i.e. no more than two feet deep is required), and muddy areas for dabbling in are also appreciated. These ducks are generally good in mixed collections, although the smaller and quieter species may be bullied. Territorial disputes between ducks of the same species may be avoided by keeping only one pair of each species in an enclosure, unless the area is very large. For a single pair of ducks a pen are of 50 to 100 square metres, depending on the size of duck, should be provided.

Notitie:

Dabbling Ducks are generally hardy, easy to maintain and easy to breed. Shelter may be required by some of the smaller species in winter. 

Yellow-billed pintails (Anas georgica spinicauda - Chilean pintail or Brown pintail) are winter-hardy and may be kept in a mixed collection with other ducks. These ducks (Anas georgica spinicauda - Chilean pintail) breed readily, using natural close ground cover for nesting, eggs laid April to May.

Most species are ground nesters and both close ground cover and ground level nest boxes should be provided. Hand-rearing is generally preferred, as these ducks are generally poor parents in captive conditions, particularly in enclosures shared with other waterfowl.

These ducks are prone to hybridization, particularly with closely related species, which should be kept apart from one another. Hybrids reported with Wood duck (Aix sponsa), Red-crested pochard (Netta rufina) and various Anas species.

 

Breeding:
Het vrouwtje Yellow-billed pintail legt doorgaans zo'n 4-10 creamy or pale pinkish eieren het broeden duurt 26 dagen.

Kunstmatig broeden:

De ideale relatieve luchtvochtigheid voor het uitbroeden van de meeste watervogeleieren is 55% voor grondbroeders en 40% bij holenbroeders. De temperatuur is meestal 37,4° C. Stel ventilatie in zoals aanbevolen door de fabrikant van de broedmachine. Eieren moeten minimaal 4 keer per dag automatisch of met de hand worden gedraaid. Naarmate de vrucht zich ontwikkelt, verliest het ei water en wordt de luchtzak groter. Bij normale ontwikkeling van een ei met een incubatietijd van 26 dagen neemt de luchtzak ongeveer een derde van het ei in beslag, dit bij drie dagen voor uitkomst. Reinheid is van vitaal belang en idealiter moet de luchtvochtigheid worden verhoogd tot 65% nadat de eerste tekenen van uitkomst zichtbaar worden.


Ringdagen:
Aanbevolen passende ringmaat voor de Yellow-billed pintail is 9 mm.
De gesloten pootring kan alleen aangebracht worden bij een jonge dabbling duck van ongeveer 12 dagen oud.

It doesn't matter what leg that you band, but it's good to have a consistent system.
Suggested: Left leg = Female, Right leg = Male
Onderhoudsvoeder:
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Foto's van de Yellow-billed pintail

Video's van de Yellow-billed pintail