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
Online Early
Current Issue
Just Accepted
All Issues
Special Issues
Sample Issue
For Authors
General Information
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

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 13(2)

Breeding-Season, Nesting Success and Nestling Growth in Carnabys Cockatoo, Calyptorhynchus-Funereus-Latirostris, Over 16 Years at Coomallo Creek, and a Method for Assessing the Viability of Populations in Other Areas

DA Saunders

Australian Wildlife Research 13(2) 261 - 273
Published: 1986


The short-billed form of the white-tailed black cockatoo has been studied at Coomallo Creek for 16 years (1969-84), during which time the distribution of natlve vegetation in the district has greatly changed, and its total percentage has diminished from 67% in 1969 to 34% in 1982. At the same time the breeding population of black cockatoos in the area has fallen by one-third (to about 40 breeding pairs), but without any decrease in nesting success or in nestling 'fitness' as measured by comparing nestling weights with those of earlier years. The results of this study have been used to derwe a technique to assess the viability of populations of the white-tailed black cockatoo in other areas. This may be done by finding several nests, weighing each nestling, and measuring the length of its folded left wing, then aging it from a curve for growth of folded left wing drawn up from known-age nestlings. The weights of the nestlings are plotted against the appropriate ages, based on data from Coomallo Creek. Areas where nestlings show decreased 'fitness', as established by this method, may be in the process of losing their populations of the white-tailed black cockatoo.

Full text doi:10.1071/WR9860261

© CSIRO 1986

blank image
Subscriber Login

PDF (506 KB) $25
 Export Citation
Legal & Privacy | Contact Us | Help


© CSIRO 1996-2015