Population Ecology of the Cooperatively Breeding Acorn Woodpecker. (MPB-24), Volume 24 PDF Download
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Author: Walter D. Koenig
Publisher: Princeton University Press
ISBN: 0691209626
Category : Science
Languages : en
Pages : 458
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Book Description
Ever since the acorn woodpecker was observed and described by Spanish explorers, its behavior--particularly the unique habit of caching acorns in specialized storage trees or granaries--has impressed observers. Acorn woodpeckers are also one of the few temperate zone species in which young are reared communally in family groups. This demographic study investigates the complexities of acorn storage and group living in acorn woodpeckers at Hastings Reservation in central coastal California. It is one of the most thorough studies of any avian social system to date.
Author: Walter D. Koenig
Publisher: Princeton University Press
ISBN: 0691209626
Category : Science
Languages : en
Pages : 458
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Book Description
Ever since the acorn woodpecker was observed and described by Spanish explorers, its behavior--particularly the unique habit of caching acorns in specialized storage trees or granaries--has impressed observers. Acorn woodpeckers are also one of the few temperate zone species in which young are reared communally in family groups. This demographic study investigates the complexities of acorn storage and group living in acorn woodpeckers at Hastings Reservation in central coastal California. It is one of the most thorough studies of any avian social system to date.
Author: Philip Norman Hooge
Publisher:
ISBN:
Category : Acorn woodpecker
Languages : en
Pages : 400
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Book Description
Author: Ronald Lane Mumme
Publisher:
ISBN:
Category :
Languages : en
Pages : 392
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Book Description
Author: Justyn T. Stahl
Publisher:
ISBN:
Category :
Languages : en
Pages :
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Book Description
ABSTRACT: Cooperative breeding in birds occurs when more than two individuals provide care for a single nest. In many species, the additional adults present are offspring from a previous year who have delayed dispersal, and provision young who are non-descendant kin. Delaying dispersal and age of first breeding can influence the demography and fitness of individuals, but the fitness and demographic consequences of helping behavior are poorly understood. Using long-term data (1972-2004), I examined the demographic and fitness consequences of helping behavior in acorn woodpeckers Melanerpes formicivorus. Using a multi-state capture-mark-recapture framework, I found that the apparent survival of breeders was higher than helpers, and the survival of males was higher than females. Juveniles were much more likely to become helpers rather than breeders following fledging, and helpers were more likely to remain helpers rather than becoming a breeder. Both survival and transition rates varied annually and were positively influenced by the acorn crop. For fitness estimation, I focused only on reproductive females who were banded as juveniles. Although helpers began reproduction significantly later and lived significantly longer than breeders, there was no significant difference in lifetime reproductive success or individual fitness between the two groups. However, birds that successfully bred at age 1 without helping had a significantly higher fitness than those who helped and successfully bred at age 2 or older. My results suggest that delayed dispersal and reproduction in the acorn woodpecker lead to a loss of fitness when conditions are favorable for successful reproduction. However, if constraints in the environment prevent an individual from breeding at age 1, helping is a viable option until reproduction is possible.
Author: Philip Norman Hooge
Publisher:
ISBN:
Category :
Languages : en
Pages : 222
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Book Description
Author: P. B. Stacey
Publisher:
ISBN:
Category :
Languages : en
Pages : 8
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Book Description
Author: Walter D. Koenig
Publisher:
ISBN:
Category :
Languages : en
Pages : 435
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Book Description
Author: Walter Daniel Koenig
Publisher:
ISBN:
Category : Acorn woodpecker
Languages : en
Pages : 418
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Book Description
Author: Mark Thomas Stanback
Publisher:
ISBN:
Category :
Languages : en
Pages : 386
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Book Description
Author: Walter D. Koenig
Publisher: Cambridge University Press
ISBN: 1107043433
Category : Medical
Languages : en
Pages : 403
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Book Description
Brings together long-term studies of cooperation in vertebrates that challenge our understanding of the evolution of social behavior.
