CSIRO Publishing blank image blank image blank image blank imageBooksblank image blank image blank image blank imageJournalsblank image blank image blank image blank imageAbout Usblank image blank image blank image blank imageShopping Cartblank image blank image blank image You are here: Journals > Wildlife Research   
Wildlife Research
Journal Banner
  Ecology, Management and Conservation in Natural and Modified Habitats
 
blank image Search
 
blank image blank image
blank image
 
  Advanced Search
   

Journal Home
About the Journal
Editorial Board
Contacts
Content
Current Issue
Just Accepted
All Issues
Special Issues
Sample Issue
For Authors
General Information
Notice to Authors
Submit Article
Open Access
For Referees
Referee Guidelines
Review an Article
Annual Referee Index
For Subscribers
Subscription Prices
Customer Service
Print Publication Dates

blue arrow e-Alerts
blank image
Subscribe to our Email Alert or RSS feeds for the latest journal papers.

red arrow Connect with us
blank image
facebook twitter youtube

 

Article << Previous     |     Next >>   Contents Vol 18(1)

The comparative ecology of Australian corvids. II. Social organization and behaviour

I Rowley

CSIRO Wildlife Research 18(1) 25 - 65
Published: 1973

Abstract

For five species of morphologically very similar Corvus to occur on one continent and for two or three of these species to frequently coexist in sympatry, effective isolating mechanisms must be active to maintain species integrity. This paper describes and compares the behaviour and social organization of Corvus coronoides and C. mellori in detail; C. tasmanicus, C. orru, and C. bennetti were studied less intensively but are compared wherever possible. Few spectacular or species-specific displays were recorded. Calls are varied and a "vocabulary" for C. coronoides is given; each species has a characteristic territorial advertisement call. Both C. coronoides and C. mellovi form long-lasting pair bonds; probably the other species do so as well. Adults of C. coronoides, C. orru, and C. tasmanicus maintain territories all the year round; immatures and non-breeding adults live in nomadic flocks. C. mellori and C. bennetti occupy a breeding territory only for the minimum time (3 months) necessary to rear young; for the rest of the year they and their non-breeding conspecifics are nomadic. The number and size of C. covolzoides territories varied little over the years of the study; this and the ever-present reservoir of mature but non-breeding adults in the flocks suggest that large mosaic territories for permanently resident species may limit breeding density. The nomadism of non-breeding birds enables transient localized food-gluts to be utilized.



Full text doi:10.1071/CWR9730025

© CSIRO 1973

blank image
Subscriber Login
Username:
Password:  

 
PDF (1.9 MB) $25
 Export Citation
 Print
  
    
Legal & Privacy | Contact Us | Help

CSIRO

© CSIRO 1996-2014