Chestnut Teal

Kastanje eend

Chestnut Teal (Anas castanea)

De Chestnut Teal (Anas castanea) is een dabbling duck uit de familie van de water birds that includes ducks, geese, and swans (Anatidae).

Naamgeving

Nederlandse naam:
Kastanje eend
Engelse naam:
Chestnut Teal
Duitse naam:
Kastanienente
Franse naam:
Sarcelle rousse
Wetenschappelijke naam:
Anas castanea

Taxonomische indeling

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

Beschrijving

Uiterlijke kenmerken:

The chestnut teal is darker and a slightly bigger bird than the grey teal (Anas gracilis).

Male:
Are distinctive, having a glossy green head, chestnut brown neck, breast and flanks, dark brown upper body and wings, and a black undertail with contrasting white patch. 

Female:
Are mottled dark brown and grey, with a pale throat streaked brown and a dark eye stripe.

In both sexes the eye is a deep red, the bill is blue-grey and the legs and feet are green-grey. The wings have a dark glossy green to purple speculum (panel) edged white and the underwing is brown, with white wing pits.

Voice: similar to grey teal. The main calls are the female’s high-pitched decrescendo quacking, and male’s whistle-like “burp”.

Similar species: the chestnut teal is similar to three other small duck species that are widespread on mainland New Zealand: Australasian shoveler, grey teal and brown teal. Immatures and females are similar to grey teal, but are darker and lack the pale throat. The male is similar to the shoveler in having a conspicuous white flank patch, but has a green (not blue-grey) head, and dark (not white) underwing. The chestnut teal differs from brown teal in having a red (not black) eye, a prominent white triangle on the upper wing, generally brighter chestnut underparts and a more conspicuously iridescent green head.

Maten en Gewicht

Lengte man:
De man (woerd) van de Chestnut Teal heeft een lichaamslengte van ongeveer 35-46 centimeters. De vrouw (pop) heeft een lichaamslengte van ongeveer 35-46 centimeters.
Gewicht man:
Het mannetje weegt ongeveer 600-700 gram. Het vrouwtje weegt ongeveer 600-700 gram.
Het gewicht is notoir variabel en kan alleen als indicatie worden gebruikt!
Habitat:

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. 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.

A diet based on wheat and pellets is suggested, with maintenance pellets changed to breeders pellets for the breeding season. Bread and greenfood are also appreciated. Grit should always be available, with soluble grit (e.g. oystershell grit) as a calcium source when breeding.

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.

Chestnut teal (Chestnut-breasted teal) are easy to keep, being quite winter-hardy, easy to manage, feed and breed, generally unaggressive and suitable for mixed collections with other small ducks.

These ducks may lay up to three clutches if eggs removed before incubation starts. May lay from March or April in the northern hemisphere, in ground-level or raised nest boxes, or in ground cover. Occasionally females lay a second clutch before fledging and dispersal of the first brood. Ducklings are easy to rear along with other ducklings. 

Hybridisation reports common, but firmly-paired drakes rarely pursue other females. Hybridisation reported with Anas species, also with Brazilian teal (Amazonetta brasiliensis) and Long-tailed duck (Clangula hyemalis) (ducklings were not reared).

Breeding:
Het vrouwtje Chestnut Teal legt doorgaans zo'n 7-10 Light creamy white eieren het broeden duurt 25-28 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 25-28 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 Chestnut Teal is 9 mm.
De gesloten pootring kan alleen aangebracht worden bij een jonge dabbling duck van ongeveer 11-12 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:
Lundi Premium
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Floating full food for all sea ducks, green ducks, eider ducks and geese, especially in the moulting and breeding phase ideally suited. Packed with wholesome raw materials, natural vitamins and trace elements, this performance food with a protein content of 30% forms the basis for lifelong vitality.

Foto's van de Chestnut Teal