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Mate Feeding by Western and Clark's Grebes
Gary L. Nuechterlein and Robert W. Storer
Vol. 91, No. 1 (Feb., 1989), pp. 37-42
Published by: American Ornithological Society
Stable URL: http://www.jstor.org/stable/1368146
Page Count: 6
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Of the grebes that have been studied, Western Grebes (Aechmophorus occidentalis) and Clark's Grebes (A. clarkii) are unique in having a short period of intensive mate-feeding behavior that immediately precedes nest building and egg laying. The evolution of mate feeding in these two fish-eating grebes may be the result of social selective pressures relating to mate and nest-platform guarding.
The Condor © 1989 Cooper Ornithological Society