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Experimental Evidence for Sibling Recognition in Common Terns (Sterna Hirundo)
J. Burger, M. Gochfeld and W. I. Boarman
Vol. 105, No. 1 (Jan., 1988), pp. 142-148
Published by: American Ornithological Society
Stable URL: http://www.jstor.org/stable/4087337
Page Count: 7
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Young Common Terns (Sterna hirundo) did not respond preferentially to calls of siblings at 8 and 9 days of age, but did so by 12 days of age. In experiments with and without visual isolation, and with use of playback, we demonstrated a tendency to approach sibling begging calls. This differential response indicated sibling-recognition occurred, was based on experience, and involved vocal cues.
The Auk © 1988 American Ornithologists' Union