Effect of Sex, Stage of Reproduction, Season, and Mate Removal on Prolactin in Dark-eyed Juncos’ Ellen

Abstract

Prolactin has been associated with incubation and brooding in passerine birds, but its possible association with other parental behaviors remains unclear. We measured plasma concentrations of prolactin (prl) in Dark-eyed Juncos (Bunco hyemalis), a species in which only females incubate and brood but both sexes feed nestlings. Breeding males and females were… (More)

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