Cookies Policy
X

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

Territorial Aggression of a Tropical Passerine, Zonotrichia Capensis, in Response to a Variety of Conspecific Intruders

No metrics data to plot.
The attempt to load metrics for this article has failed.
The attempt to plot a graph for these metrics has failed.
The full text of this article is not currently available.

Brill’s MyBook program is exclusively available on BrillOnline Books and Journals. Students and scholars affiliated with an institution that has purchased a Brill E-Book on the BrillOnline platform automatically have access to the MyBook option for the title(s) acquired by the Library. Brill MyBook is a print-on-demand paperback copy which is sold at a favorably uniform low price.

Access this article

+ Tax (if applicable)
Add to Favorites
You must be logged in to use this functionality

image of Behaviour

[The expression of territorial aggression by reproductively active, resident birds varies between the sexes and in response to different intruder types. Previous studies have predicted that individuals should be more aggressive towards conspecific intruders of the same sex and tolerate intruders of the opposite sex and immature individuals. In this study, we investigated the behavioural responses of a tropical population of rufous-collared sparrows (Zonotrichia capensis) to a variety of caged intruder types: Singing Males, Silent Males, Females, and Juveniles. In this species, territories are used by the resident male and female and their young, and are also used by floaters — mature individuals that do not hold territories. Resident males responded similarly and aggressively to all adult intruders in terms of song number, closest approach to the intruder, time within 5 m of the intruder, and a composite aggression score. There was no significant variation in the response of resident females to the different intruder types, although the strongest responses of the resident female were to female intruders. Neither resident males nor females behaved aggressively towards juvenile intruders. These results fail to support the observational predictions for males and females that individuals should be most aggressive towards members of the same sex, who pose the greatest threat in terms of cuckoldry and territorial takeover., The expression of territorial aggression by reproductively active, resident birds varies between the sexes and in response to different intruder types. Previous studies have predicted that individuals should be more aggressive towards conspecific intruders of the same sex and tolerate intruders of the opposite sex and immature individuals. In this study, we investigated the behavioural responses of a tropical population of rufous-collared sparrows (Zonotrichia capensis) to a variety of caged intruder types: Singing Males, Silent Males, Females, and Juveniles. In this species, territories are used by the resident male and female and their young, and are also used by floaters — mature individuals that do not hold territories. Resident males responded similarly and aggressively to all adult intruders in terms of song number, closest approach to the intruder, time within 5 m of the intruder, and a composite aggression score. There was no significant variation in the response of resident females to the different intruder types, although the strongest responses of the resident female were to female intruders. Neither resident males nor females behaved aggressively towards juvenile intruders. These results fail to support the observational predictions for males and females that individuals should be most aggressive towards members of the same sex, who pose the greatest threat in terms of cuckoldry and territorial takeover.]

10.1163/1568539042664605
/content/journals/10.1163/1568539042664605
dcterms_title,pub_keyword,dcterms_description,pub_author
6
3
Loading
Loading

Full text loading...

/content/journals/10.1163/1568539042664605
Loading

Data & Media loading...

http://brill.metastore.ingenta.com/content/journals/10.1163/1568539042664605
Loading

Article metrics loading...

/content/journals/10.1163/1568539042664605
2004-09-01
2016-12-05

Sign-in

Can't access your account?
  • Tools

  • Add to Favorites
  • Printable version
  • Email this page
  • Subscribe to ToC alert
  • Get permissions
  • Recommend to your library

    You must fill out fields marked with: *

    Librarian details
    Your details
    Why are you recommending this title?
    Select reason:
     
    Behaviour — Recommend this title to your library
  • Export citations
  • Key

  • Full access
  • Open Access
  • Partial/No accessInformation