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 20(6)

Identification of sex of Adelie penguins from observations of incubating birds

KR Kerry, JR Clarke and GD Else

Wildlife Research 20(6) 725 - 731
Published: 1993

Abstract

The suggestion that sex of Adelie penguins, Pygoscelis adeliae, might be assigned by observing which member of the pair (the male) takes the first long incubation shift (Anon. 1991) was examined for each of the 1990-91, 1991-92 and 1992-93 breeding seasons. There was an 8- or 9-day period when more than 90% of the incubating birds were male and a 6- or 7-day period when more than 90% of the birds were female. The dates of these peak periods of male or female presence overlapped by only 2-5 days between the three seasons but were constant to within 2 days relative to the commencement of egg laying. Peak presence of males occurred 15-21 days after the appearance of the first egg in the colony and peak presence of females after 33-36 days from this date. In all three seasons male birds could be identified with 91.8-98.6% accuracy within 15-21 days after the first sighting of an egg. The method provides, therefore, a means of identifying the sex of Adtlie penguins with an accuracy greater than 90% and is applicable to whole colonies containing several hundred pairs without recourse to continuous observations or capturing the birds.



Full text doi:10.1071/WR9930725

© CSIRO 1993

blank image
Subscriber Login
Username:
Password:  

 
PDF (287 KB) $25
 Export Citation
 Print
  
    
Legal & Privacy | Contact Us | Help

CSIRO

© CSIRO 1996-2016