Harteman Wildfowl, presented by Jan Harteman
Screamers are rather special inhabitants of zoos and in waterfowl collections. Although one might not thinks so they are regarded as waterfowl; closely related to the magpie goose (Anseranas semipalmata).
They swim less than other waterfowl, but bathe every day. There are three species of screamers which live in tropical and sub-tropical South America: the Horned screamer or Anioema (Anhima cornuta), the Northern screamer (Chauna chavaria) and the Southern screamer (Chauna torquata).
Young Screamers are fledgelings like other waterfowl. When born in captivity: For the first three weeks the young have to eat meat (minced meat) and vegetable based fodder (ground carrot and lettuce) mixed into some sort of porridge.
After three weeks they only get vegetables and waterfowl-grain. Screamers produce a high pitched screaming sound. On each of the wings there are two 5cm long spurrs, used as weapons in defence. As fodder Screamers like to eat duckseed, duck grain, vegetables and grass.
Sceamers are not hardy so in winter they have to be kept in frost proof conditions.
Their breeding season is in spring, but variable. Lays 2 upto 7 eggs which hatch after 43-46 days.
Ringsize: 24 mm
This species has a large range, with an estimated global Extent of Occurrence of 3,500,000 km². It has a large global population estimated to be 100,000-1,000,000 individuals (Wetlands International 2002). Global population trends have not been quantified, but the species is not believed to approach the thresholds for the population decline criterion of the IUCN Red List (i.e. declining more than 30% in ten years or three generations). For these reasons, the species is evaluated as Least Concern.
Left: screamers making their call
Left: photo by H. Grolleman
Left: juvenile screamer