By Richard Northcott

Рабочая тетрадь для начинающих изучать английский на тему Животные и их детеныши.
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No protected status information was available for Madagascar and both of the sites in Zambia are protected. 30 WHITE-FACED WHISTLING-DUCK Dendrocygna viduata Subspecies: Monotypic. Distribution: Widespread in tropical South America, southern Central America and Africa. The species occurs widely in Africa south of the Sahara and also in Madagascar and on the Comoro Islands. It is abundant in suitable areas, being in many places the most abundant species of Anatidae, and is the only common species of Anatidae on the coastal plain of West Africa.

A. Torres Esquivias et al. ) have listed 87 sites in Spain at which the species has occurred since 1987. Handrinos (1995) lists the known sites in Greece and Annex 2 provides an extensive key sites listing for the Algeria/Tunisia and southeast Europe/Turkey/ Southwest Asia populations. In southeast Europe/Turkey/Southwest Asia few key sites can be identified outside of winter. In autumn concentrations have been found in Turkey (300 at Sodah Gol and 500 Moulting at Kulu Golu) and in Russia (1000 at Manych-Godilo Lakes) but more sites surely exist.

And was thought to be extinct at Lake Alaotra by 1989 (Young & Smith, 1989), however a single individual was captured here in October 1993 (Pidgeon, 1996). Langrand (1990) attributes the decline in numbers to hunting and trapping. Other factors include the transformation of habitat, widespread introduction of exotic fish that compete for food, introduction of exotic plants, and deterioration in water quality as a result of deforestation and soil erosion in catchment areas (Green, 1992; O. ).

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