Zubko, Valentina ; Havrilenko, Victor ; Semenov, Nikolay
Acta Ornithologica, vol. 36, no. 1 ; Restytucja populacji kazarki w rezerwacie "Askania Nowa" na Ukrainie
Polska Akademia Nauk. Muzeum i Instytut Zoologii ; Meeting of the European Ornithologists' Union (2 ; 1999 ; Gdańsk)
Muzeum i Instytut Zoologii PAN
Referat wygłoszony na Second Meeting of the European Ornithologists' Union ; Bibliogr. p. 99-100 ; P. [97]-100 : ill. ; 27 cm ; Abstract in Polish. Taxa in Latin
In the XIX century the Ruddy Shelduck was regarded as a common species in Ukraine. Now it is in the Red Data Book of Ukraine and on the Berne Convention List. In 1885 it appeared in the Ascanian Zoo, and a year later there were 16 birds. Nowadays, in the summer and autumn their numbers range from 700 to 1200. The territorial centre of the population are the zoo ponds and the botanical garden, where 48-65 pairs nest. This semi-wild population has been formed as a result of successive acclimatization measures: forming broods with foster parents (Tadorna ferruginea, Cairina moschata, Anas platyrhynchos), creating artificial nests, regular feeding, and the availability of unfrozen water in the pond. Free-living birds migrate from Ascania Nova to other places, even to distant regions.
MiIZ PAN, call no. P.257, Vol. 36, No 1 ; MiIZ PAN, call no. P.4568, Vol. 36, No 1 ; click here to follow the link
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Museum and Institute of Zoology of the Polish Academy of Sciences
Library of the Museum and Institute of Zoology of the Polish Academy of Sciences
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https://rcin.org.pl./publication/61305
Lewartowski, Zenon Stawarczyk, Tadeusz (1952– ) Winiecki, Aleksander (1956– )
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Schmidt, Günter (zoologia ; 1928- )
Engel, Jacek Keller, Marek Leszkowicz, Jan Zawadzki, Jerzy
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