Biotic and Abiotic Factors Affecting the Feeding Behavior of the Black-tailed Godwit

Publication Type:Journal Article
Year of Publication:2002
Authors:Domínguez, J
Journal:Waterbirds
Volume:25
Issue:4
Date Published:2002
ISBN Number:1524-4695
Keywords:Chroicocephalus, Chroicocephalus ridibundus, Laridae, Larus, Larus ridibundus, Limosa, Limosa limosa, Scolopacidae, Spain
Abstract:Abstract The feeding and vigilance behavior of the Black-tailed Godwit (Limosa limosa) were studied in an intertidal area of the Ría de Huelva, Spain, during the autumn migration. During diurnal low-tide periods, feeding was the predominant activity (80-85% of birds sampled). No significant negative relationship was observed between conspecific density and vigilance variables, and this may be related to the increases observed with group size in the intraspecific aggression and probe rates. The godwits showed greater vigilance in the presence of Black-headed Gulls (Larus ridibundus), possibly because of the kleptoparasitic activity of this species. The godwits ingested more worms during the period around low tide and fewer prey items when the air temperature was rising. The feeding rate did not decrease with the conspecific density.Abstract The feeding and vigilance behavior of the Black-tailed Godwit (Limosa limosa) were studied in an intertidal area of the Ría de Huelva, Spain, during the autumn migration. During diurnal low-tide periods, feeding was the predominant activity (80-85% of birds sampled). No significant negative relationship was observed between conspecific density and vigilance variables, and this may be related to the increases observed with group size in the intraspecific aggression and probe rates. The godwits showed greater vigilance in the presence of Black-headed Gulls (Larus ridibundus), possibly because of the kleptoparasitic activity of this species. The godwits ingested more worms during the period around low tide and fewer prey items when the air temperature was rising. The feeding rate did not decrease with the conspecific density.
URL:http://dx.doi.org/10.1675/1524-4695(2002)025[0393:BAAFAT]2.0.CO;2
Short Title:Waterbirds
Scratchpads developed and conceived by (alphabetical): Ed Baker, Katherine Bouton Alice Heaton Dimitris Koureas, Laurence Livermore, Dave Roberts, Simon Rycroft, Ben Scott, Vince Smith