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Science 14 June 1963:
Vol. 140. no. 3572, pp. 1225 - 1226
DOI: 10.1126/science.140.3572.1225
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Articles

Testosterone-Induced Incubation Patches of Phalarope Birds

J. E. Johns 1 and E. W. Pfeiffer 1

1 Department of Zoology, Montana State University, Missoula

In order to determine the endocrine factors in the production of the incubation patch of phalarope birds (Steganopus tricolor and Lobipes lobatus), adults of both sexes have been maintained in captivity and injected with estradiol, testosterone, or prolactin, or with different combinations of these hormones. Only testosterone and prolactin in combination produced incubation patches in all birds, both male and female, in the two species.

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Science. ISSN 0036-8075 (print), 1095-9203 (online)