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Intraclutch Variation in Testosterone Content of Red-Winged Blackbird Eggs
Joseph L. Lipar, Ellen D. Ketterson and Val Nolan, Jr.
Vol. 116, No. 1 (Jan., 1999), pp. 231-235
Published by: American Ornithological Society
Stable URL: http://www.jstor.org/stable/4089471
Page Count: 5