Aves, p�le ornithologique de Natagora

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Aves, 40/1-4 | 2003 | 174-175

  Black Stork (Ciconia nigra) in Africa: data collected from waterbirds census.
Yaokokore Beibro, H., Dodman, T. & Issa Sylla, S.

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Article summary

Waterbirds Censues in Africa are part of a global project monitoring waterbirds and wetlands: International Waterbirds Census (IWC). Each year, since 1991, censuses are conducted under wetlands International’s coordination. It usually takes place in the middle of January and sometimes in mid-July for some countries. Data will help to make a general waterbird population assessment, to identify major sites, to isolate priorities for conservation and finally to assist other national and international projects. In Africa, this activity also supports international conventions like Ramsar, biodiversity convention, and AEWA under Bonn’s convention. It is usually agreed that the major use for censuses is to assess bird populations, even though population assessment is one of most difficult result to get from censuses (ROSE, 1997), because more complete information are required. In Africa, 15 countries jointed the project when it started in 1991 and in 1999 there were 30 of them. Following that, numbers of participants and visited sites increased too. Data quality also reflected dynamic of this activity, thanks to education, awareness, and training efforts from individuals to government or non-governmental organizations. A total of 254 bird species from 28 families are studied in this program. Among them, 4 stork species including Black Stork (Ciconia nigra). From 1991 to 1999, a total of 314,790 storks were observed but only 581 black ones (0,18% of total observations. The comparison with the results obtained for the three co-generic species (Ciconia ciconia, C. episcopus, C. addimii) epmphasize the scarcity of Black Stork on the African continent.

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