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Institut de recherche pour la conservation des zones humides méditerranéennes

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Titre :	Common Cranes Grus grus in Ethiopia
Auteurs :	Guenter Nowald, Auteur ; Werner Schroeder, Auteur ; Volker Guenther, Auteur ; Shimelis Aynalem, Auteur
Type de document :	Article
Dans :	Vogelwelt (Die) (131(2) 2010)
Article en page(s) :	169-174
Résumé :	Located at the Horn of Africa, the landmass of Ethiopia was and still is an important stopover. wintering site for migratory bird species on their passage between Europe, Asia and vast part Africa. Crane Conservation Germany (NABU, WWF, Lufthansa) organised in close cooperate with ornithologists form the Ethiopian Wildlife and Natural History Society (EWNHS), and to study the population size of wintering Common Cranes, their distribution, biology, and ecology during wintering. In 2007, a total of 53,250 cranes and in 2009 a total 59,008 cranes at nine roosts were recorded while flying to or already at the roosts. During the field study, wetlands were visited and registered which fulfilled the criteria as Important Bird Areas (12 roosts with more than 350 Common Cranes, 1 % criteria). Most of the birds were feeding on stubble fields of Teff Fragrostis tef and other cereals (like maize) in a bigger area around the roosts. The flock size of the foraging cranes indicates low food availability on the stubble fields (median data 7 and 22 birds in 2007 and 2009, respectively). A problem seems to be the increasing human population the expansion of agricultural land, the reduction of wetlands and changes in the water regime thus an unsustainable use of natural resources.

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