Wandering woodpeckers: foray behavior in a social bird.
Acorn woodpecker
automated radiotelemetry
breeders
cooperative breeding
dispersal
extra-territorial movements
helpers
Journal
Ecology
ISSN: 1939-9170
Titre abrégé: Ecology
Pays: United States
ID NLM: 0043541
Informations de publication
Date de publication:
02 2020
02 2020
Historique:
received:
09
04
2019
revised:
17
09
2019
accepted:
18
10
2019
pubmed:
30
11
2019
medline:
26
9
2020
entrez:
30
11
2019
Statut:
ppublish
Résumé
In many cooperatively breeding taxa, nonbreeding subordinates, or helpers, use extra-territorial forays to discover dispersal opportunities. Such forays are considered energetically costly and foraying birds face aggression from conspecific members of the territories they visit. In contrast, breeders in cooperatively breeding taxa are expected to foray seldomly. We used novel tracking technologies to follow 62 acorn woodpeckers (Melanerpes formicivorus), a cooperatively breeding bird, to study extra-territorial foray behavior. Both helpers and breeders engaged in extra-territorial forays routinely and often several times per day. Helpers forayed earlier in the day and invested more time when foraying to high-quality territories. Unexpectedly, breeders forayed as often and as far as helpers. Breeders from high-quality territories forayed closer to their home territories than breeders from low-quality territories, reflecting a potential trade-off between foraying and territory defense. Such a routine pattern of extra-territorial forays in both helpers and breeders suggests that the motives behind forays differ by sex and social status and involve more than simply searching for dispersal opportunities.
Types de publication
Journal Article
Research Support, Non-U.S. Gov't
Langues
eng
Sous-ensembles de citation
IM
Pagination
e02943Subventions
Organisme : Division of Environmental Biology
ID : 1256394
Pays : International
Organisme : Division of Biological Infrastructure
ID : 1556138
Pays : International
Organisme : Division of Integrative Organismal Systems
ID : 1455881
Pays : International
Organisme : Division of Integrative Organismal Systems
ID : 1455900
Pays : International
Informations de copyright
© 2019 by the Ecological Society of America.
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