Cookies Policy
X
Cookie Policy

This site uses cookies. By continuing to browse the site you are agreeing to our use of cookies.

I accept this policy

Find out more here

Exposure To Predators and Access To Food in Wintering White-Throated Sparrows Zonotrichia Albicollis

MyBook is a cheap paperback edition of the original book and will be sold at uniform, low price.

Buy this article

Price:
$30.00+ Tax (if applicable)
Add to Favorites

image of Behaviour

I studied a free-living population of white-throated sparrows (Zonotrichia albicollis) to determine which, among eleven behavioural, morphological and situational variables, were correlated with the distance from cover at which individuals fed (a presumed index of predation risk) and the amount of time they spent feeding at three observation sites. Time spent feeding was correlated only with dominance, an indication that dominant birds obtained greater access to high quality food. In contrast, an assortment of factors affected distance to cover. Individuals tended to feed far from cover if they were: (1) in large flocks, (2) males, (3) young and (4) subordinate. Distance to cover for the population as a whole increased during cold and cloudy conditions. The failure of dominance alone to determine a bird's distance to cover probably resulted in part from the confusion caused by dominant heterospecifics (e.g. cardinals, Cardinalis cardinalis) and from their apparent tendency to tolerate mainly small white-throated sparrows (which tended to be subordinate) feeding with them. Overall, this study indicates that while dominance clearly allows easy access to food, it is only one of several factors affecting exposure to predators.

Affiliations: 1: Department of Biology, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina, 27599-3280, U.S.A.

Sign-in

Can't access your account?
  • Tools

  • Add to Favorites
  • Printable version
  • Email this page
  • Create email alert
  • Get permissions
  • Recommend to your library

    You must fill out fields marked with: *

    Librarian details
    Name:*
    Email:*
    Your details
    Name:*
    Email:*
    Department:*
    Why are you recommending this title?
    Select reason:
     
     
     
     
    Other:
     
    Behaviour — Recommend this title to your library

    Thank you

    Your recommendation has been sent to your librarian.

  • Export citations
  • Key

  • Full access
  • Open Access
  • Partial/No accessInformation