Estimation of survival from repeated sightings of tagged galahs ( Cacatua roseicapilla).

S. T. Buckland, I. Rowley, D. A. Williams

Research output: Contribution to journalArticlepeer-review

8 Citations (Scopus)

Abstract

Although the initial survival of Cacatua roseicapilla nestlings varies between years there is no evidence for year-to-year variation in survival after the first January of life. There is agreement between estimated survival of nestling tagged and netted birds except during a 6-month period of the 2nd year. The survival rate increases during the first 18 months of life but remains constant thereafter. The serious discrepancy between the low estimated survival and the higher survival necessary to maintain a viable population indicates that a proportion of tagged birds must emigrate from the study area and be replaced by untagged immigrants.-from Authors

Original languageEnglish
Pages (from-to)563-573
Number of pages11
JournalJournal of Animal Ecology
Volume52
Issue number2
DOIs
Publication statusPublished - 1 Jan 1983

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