AVIS-IBIS

Birds of Indian Subcontinent

Behavior of Common Loons in Winter (Conducta de Gavia immer durante el Invierno)

Publication Type:Journal Article
Year of Publication:1989
Authors:Daub, BC
Journal:Journal of Field Ornithology
Volume:60
Issue:3
Date Published:1989
ISBN Number:02738570
Keywords:Gavia, Gavia immer, Gaviidae, Laridae, Larus, Larus argentatus, Larus cachinnans, Larus vegae
Abstract:Common Loons (Gavia immer) wintering at Weekapaug, Rhode Island showed no signs of territoriality and were observed primarily as solitary individuals. Their most frequent activities were drifting, feeding, and preening. Feeding occurred most often in water depths of 1.5-5.5 m, whereas drifting and preening occurred more frequently in depths of 5.5-9 m. Loons occupied shallower waters at low tide and deeper waters at high and mid tide. Occurrences of kleptoparasitism of Common Loons by Herring Gulls (Larus argentatus) were observed. /// Individuos de somormujo Gavia immer, que pasaron el invierno en Weekapaug, Rhode Island, no mostraron signos de territorialismo, y se observaron mayormente solos. Sus actividades más frecuentes resultaron ser el flotar a la deriva, alimentarse y el acicalarse. La alimentación se llevó a cabo particularmente en aguas cuya profundidad varió entre 1.5 a 5.5 m, mientras que el flotar y el acicalarse se llevó a cabo en aves con aguas más profundas (5.5-9 m). Los somormujos ocuparon aguas llanas cuando la marea estaba baja, y aguas más profundas cuando la marea estaba media o alta. Se observaron episodios de kleptoparasitismo por parte de gaviotas (Larus argentatus).
URL:http://www.jstor.org/stable/4513444
Short Title:Journal of Field Ornithology
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