Air census of two colonies of Adelie Penguins ( Pygoscelis adeliae )in Ross Dependency, Antarctica

Air photographs taken on biological survey flights between 1962 and 1965 have yielded counts of Adelie Penguin breeding colonies at Beaufort Island in the southwestern Ross Sea and Inexpressible Island on the Victoria Land coast (Fig 1). These colonies are remote from expedition bases, seldom visite...

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Bibliographic Details
Published in:Polar Record
Main Author: Stonehouse, Bernard
Format: Article in Journal/Newspaper
Language:English
Published: Cambridge University Press (CUP) 1969
Subjects:
General Earth and Planetary Sciences
Ecology
Geography, Planning and Development
Ross Sea
Victoria Land
Ross Dependency
Royds
Cape Royds
Stonehouse
Inexpressible Island
Sladen
Beaufort Island
Adelie penguin
Antarc*
Antarctica
Polar Record
Pygoscelis adeliae
Online Access:http://dx.doi.org/10.1017/s0032247400064494
https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0032247400064494
Description
Summary:Air photographs taken on biological survey flights between 1962 and 1965 have yielded counts of Adelie Penguin breeding colonies at Beaufort Island in the southwestern Ross Sea and Inexpressible Island on the Victoria Land coast (Fig 1). These colonies are remote from expedition bases, seldom visited, and too large for accurate assessment from the ground. Earlier estimates of their size are summarised by Taylor (1964). Methods of estimating colony size are discussed by Caughley (1960) and Taylor (1962). This survey is based on serial black and white photographs taken at optimal times of the breeding cycle; counts are converted to estimates of breeding population size using data from a ground study at the Cape Royds (Fig 1) breeding colony and from known patterns of breeding at other colonies (Sladen, 1958; SapinJaloustre, 1960; Taylor. 1962; Stonehouse. 1963; Reid. 1964).

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