Swan Goose

Zwaangans

Swan Goose (Anser cygnoides)

De Swan Goose (Anser cygnoides) is een goose uit de familie van de water birds that includes ducks, geese, and swans (Anatidae).

Naamgeving

Nederlandse naam:
Zwaangans
Engelse naam:
Swan Goose
Duitse naam:
Schwanengans
Franse naam:
Oie cygnoïde
Wetenschappelijke naam:
Anser cygnoides

Taxonomische indeling

Orde:
Anseriformes
Familie:
Anatidae
Onderfamilie:
Anserinae
Geslacht:
Anser

Beschrijving

Uiterlijke kenmerken:

Male:
Upperparts are greyish-brown, with thin light fringes to the larger feathers and a maroon hindneck and cap (reaching just below the eye). The remiges are blackish, as are the entire underwing and the white-tipped rectrices, while the upper- and undertail coverts are white. A thin white stripe surrounds the bill base. Apart from darker streaks on the belly and flanks, the underside is pale buff, being especially light on the lower head and foreneck which are sharply delimited against the maroon. In flight, the wings appear dark, with no conspicuous pattern. Uniquely among its genus, the long, heavy bill is completely black; the legs and feet, on the other hand, are orange as in most of its relatives. The eyes' irides are maroon. 

Female:
Identical to male but smaller, with slightly shorter and less deep bill and shorter neck. Easy to tell when they are paired.

Juvenile:
Are duller than adult birds, and lack the white bill base and dark streaks on the underside

Maten en Gewicht

Lengte man:
De man (woerd) van de Swan Goose heeft een lichaamslengte van ongeveer 81-94 centimeters. De vrouw (pop) heeft een lichaamslengte van ongeveer 81-94 centimeters.
Gewicht man:
Het mannetje weegt ongeveer 2850-3500 gram. Het vrouwtje weegt ongeveer 2850-3500 gram.
Het gewicht is notoir variabel en kan alleen als indicatie worden gebruikt!
Notitie:

Swan geese are hardy, and may be kept in mixed collections. As with other geese, a good grazing area should be available as well as a water area; they may be best kept in large field.

These geese are fairly easily to breed. Open cover for ground nesting should be provided, also a kennel or wigwam. Normally lay April to May.

Hybrids In biology, a hybrid is the offspring resulting from combining the qualities of two organisms of different breeds, varieties, species or genera through sexual reproduction. Hybrids are not always intermediates between their parents (such as in blending inheritance), but can show hybrid vigour, sometimes growing larger or taller than either parent. In taxonomy, a key question is how closely related the parent species are.  with other Anser species have been fertile, and sterile hybrids have been reported with Branta species and with Mute swan - (Cygnus olor); has also been reported to  hybridise In biology, a hybrid is the offspring resulting from combining the qualities of two organisms of different breeds, varieties, species or genera through sexual reproduction. Hybrids In biology, a hybrid is the offspring resulting from combining the qualities of two organisms of different breeds, varieties, species or genera through sexual reproduction. Hybrids are not always intermediates between their parents (such as in blending inheritance), but can show hybrid vigour, sometimes growing larger or taller than either parent. In taxonomy, a key question is how closely related the parent species are. are not always intermediates between their parents (such as in blending inheritance), but can show hybrid vigour, sometimes growing larger or taller than either parent. In taxonomy, a key question is how closely related the parent species are.  with Egyptian goose - (Alopochen aegyptiacus) and Muscovy duck - (Cairina moschata).

N.B. Swan geese appear to be particularly susceptible to Gizzard Worm Infection.

Breeding:
Het vrouwtje Swan Goose legt doorgaans zo'n 5-8 white eieren het broeden duurt 28-30 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 28-30 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 Swan Goose is 20 mm.
De gesloten pootring kan alleen aangebracht worden bij een jonge goose van ongeveer 16-18 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 Regular
Lundi Regular
Lundi Regular
Lundi Regular
Lundi Regular

Lundi Regular with a protein content of 20%, valuable Spirulina and high-quality by-products is optimally balanced in its composition maintenance food for water ornamental fowl of all kinds. Especially green teal and Whistling ducks that are not dependent on a very high protein content, are well supplied.

Lundi Regular contains all the minerals and vitamins in full form that are important for the animals. Therefore also suitable as breeding food.

Lundi Premium
Lundi Premium
Lundi Premium
Lundi Premium
Lundi Premium

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.

Wetgeving:
No information about regulation available

Foto's van de Swan Goose