Site fidelity in High Arctic breeding waders

Tomkovich, P.S.; Soloviev, M.Y.

Авторы: Tomkovich P.S., Soloviev M.Yu
Журнал: Ostrich
Том: 65
Номер: 2
Год издания: 1994
Издательство: Birdlife South Africa
Местоположение издательства: South Africa
Первая страница: 174
Последняя страница: 180
DOI: 10.1080/00306525.1994.9639680
Аннотация: The return rate and fluctuations in density between years were determined for colour-marked populations of Grey Plover Pluvialis squatarola, Little Stint Culidris minuta, Curlew Sandpiper C. ferruginea, Sanderlin C. alba and Knot C. cunufus in a study in the Knipovich Bay area, northern Taimyr, Central Siberia during three breeding seasons, June 1990 to August 1992. No birds marked as chick were recorded as returning to the study area. Females of all species exhibited low site fidelity. The return rate of males varied between species. No marked male Curlew Sandpiper or Little Stint were recorded in the season followin the marking, which is compatible with the nomadic behaviour of these two species. In contrast, males of Grey Plover and Knot were site faithful and had return rates of 78% and respectively (though the latter value may have been underestimated). Site fidelity of Sanderling males lay between these extremes (the return rate was 20%). The variability of bud breeding density in the study area was negatively correlated with return rate and reached the largest value in Little Stint (a factor 0718.0 between the lowest and highest densities) and Curlew Sandpiper (factors of 4.4 for males and 5.7 for females, being intermediate in Sanderling (2.5) and the smallest in males of Grey Plover (1.25) and Knot (1.4).
Добавил в систему: Томкович Павел Станиславович

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