Ecology breeding biology and morphological characters of the black necked grebe podiceps nigricollis

Dittberner, H.; Dittberner, W.

Mitteilungen aus dem Zoologischen Museum in Berlin 60(Suppl): 57-88


ISSN/ISBN: 0373-8493
Accession: 005211485

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Between 1968 and 1978, 38 colonies of Podiceps nigricollis on Lake Felchow, district of Angermuende East Germany with 3-65 breeding pairs (on the average, 16.9 pairs/yr) were investigated and analyzed with regard to site preference, duration and form of settlement. Observation, banding and color marking, showed that the number of annual broods depends upon the date of arrival of the population. There can be up to 3 supplementary clutches; 92 individuals were measured biometrically.