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Display Rate and Speed of Nest Relief in Antarctic Pygoscelid Penguins

D. Müller-Schwarze and C. Müller-Schwarze
The Auk
Vol. 97, No. 4 (Oct., 1980), pp. 825-831
Stable URL: http://www.jstor.org/stable/4085754
Page Count: 7
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Since scans are not currently available to screen readers, please contact JSTOR User Support for access. We'll provide a PDF copy for your screen reader.
Display Rate and Speed of Nest Relief in Antarctic Pygoscelid Penguins
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Abstract

The three species of the genus Pygoscelis, P. adeliae (Adélie Penguin), P. antarctica (Chinstrap Penguin), and P. papua (Gentoo Penguin) perform an elaborate Nest Relief Ceremony (NRC) upon one mate's return to the nest. The NRC consists of a number of displays, each of which is performed one or several times. The most conspicuous displays during NRC are the Loud Mutual Display (LMD) and Quiet Mutual Display (QMD) in P. adeliae and P. antarctica, and their morphologically different functional equivalents in P. papua, the "donkey call" (LMD) and "bow-gape-hiss" (BGH). The displays whose repetition rate is negatively correlated with the time elapsed between arrival of the mate and actual changeover are the LMD in P. adeliae, "circling" in P. antarctica, and BGH in P. papua.

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