Change in body mass can overrule the effects of maternal testosterone on primary offspring sex ratio of first eggs in homing pigeons.

Abstract

The phenomenon of primary offspring sex ratio adjustment is being extensively studied, yet knowledge of the underlying proximate mechanism is still mainly hypothetical. Female birds are the heterogametic sex, thus potentially controlling the sex of the gamete to be fertilized. In several bird species, independent studies showed effects of maternal plasma… (More)
DOI: 10.1086/651315

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