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 Structure
Contacts
Content
Current Issue
Just Accepted
All Issues
Special Issues
Sample Issue
For Authors
General Information
Scope
Submit Article
Author Instructions
Open Access
For Referees
Referee Guidelines
Review an Article
Annual Referee Index
For Subscribers
Subscription Prices
Customer Service
Print Publication Dates
Library Recommendation

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 logo LinkedIn

 

Article << Previous     |     Next >>   Contents Vol 10(2)

Mortality and Dispersal of Juvenile Galahs, Cacatua roseicapilla, in the Western Australian Wheatbelt

I Rowley

Australian Wildlife Research 10(2) 329 - 342
Published: 1983

Abstract

'From 265 tag or band returns (11% of the birds marked) shooting accounts for most galah deaths in the Western Australian wheatbelt, with cats, raptors and motor vehicles as other major mortality factors; a quarter of the young birds that leave the nest may die before they are deserted by their parents after 6 weeks. Newly independent galahs tend to disperse down-wind to the north-west from then on during the dry summer and autumn (January-April). In late autumn and winter dispersal becomes roughly random and the distance travelled increases. Of galahs marked as juveniles and later found dead, 80% had travelled less than 20 km, whilst one third had remained within 5 km of where they were hatched or netted. Juvenile dispersal appears to end in the second autumn of life, when individuals tend to join flocks of non-breeding birds that are only locally nomadic. It is from these local flocks that replacements to the resident breeding pool of adult birds come.



Full text doi:10.1071/WR9830329

© CSIRO 1983

blank image
Subscriber Login
Username:
Password:  

 
PDF (731 KB) $25
 Export Citation
 Print
  
    
Legal & Privacy | Contact Us | Help

CSIRO

© CSIRO 1996-2016