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Sexual Segregation of Red-Billed Queleas (Quelea quelea) in the Awash River Basin of Ethiopia
M. M. Jaeger, W. A. Erickson and M. E. Jaeger
Vol. 96, No. 3 (Jul., 1979), pp. 516-524
Published by: American Ornithological Society
Stable URL: http://www.jstor.org/stable/4085548
Page Count: 9
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Evidence is presented supporting a seasonal segregation by sex and age of the Red-billed Quelea (Quelea quelea) in and associated with the Awash River Basin of Ethiopia. Sexual segregation is most pronounced in the late dry season/early rains period (March-June), which precedes breeding (July-September). At this time the males appear to be more concentrated in the middle Awash Valley, in the general area where breeding will occur, while the females remain more dispersed. A balanced sex ratio is found from July to September. Following breeding there is a general dispersal with many queleas moving out to the cereal growing areas that border the Awash Valley. This process of dispersal results in a separation of adults from juveniles and, to a lesser degree, males from females.
The Auk © 1979 American Ornithologists' Union