NDLI: Where to settle in a rapidly expanding bird colony: a case study on colony expansion in High Arctic breeding geese

Content Provider	Springer Nature Link
Author	Anderson, Helen B. Madsen, Jesper Woodin, Sarah J. Wal, René
Copyright Year	2014
Abstract	As colonies fill up with more individuals, areas of preferred nesting habitat can become scarce. Individuals attracted to the colony by the presence of conspecifics may then occupy nest sites with different habitat characteristics to that of established breeders and, as a result, experience lower nesting success. We studied a rapidly growing colony of Svalbard pink-footed geese Anser brachyrhynchus to determine any such changes in nest site characteristics and nesting success of newly used nest locations. Svalbard pink-footed geese are a long-lived migratory species that breeds during the short Arctic summer and whose population has doubled since the early 2000s to c. 80,000. From 2003 to 2012, nest numbers increased over fivefold, from 49 to 226, with the majority (range 57–82 %) established within 30 m of another nest (total range 1–164 m). Most nests, particularly during the early stages of colony growth, shared common features associated with better protection against predation and closer proximity to food resources; two factors thought key in the evolution of colony formation. As nest numbers within the colony increased, new nests occupied locations where visibility from the nest was restricted and foraging areas were further away. Despite these changes in nest site characteristics, the nesting success of geese using new sites was not lower than that of birds using older nests. Hence, we propose that nesting in dense aggregations may offset any effects of suboptimal nest site characteristics on nesting success via the presence of more adults and the resultant increased vigilance towards predators.
Starting Page	325
Ending Page	334
Page Count	10
File Format	PDF
ISSN	03405443
Journal	Behavioral Ecology and Sociobiology
Volume Number	69
Issue Number	2
e-ISSN	14320762
Language	English
Publisher	Springer Berlin Heidelberg
Publisher Date	2014-11-14
Publisher Place	Berlin, Heidelberg
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Nest site characteristics Nesting success Clustering Coloniality Geese Behavioral Sciences Zoology Evolutionary Biology
Content Type	Text
Resource Type	Article
Subject	Animal Science and Zoology Ecology, Evolution, Behavior and Systematics

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