Estradiol dosage and the solicitation display assay in red-winged blackbirds

William A. Searcy, Michael S. Capp

Research output: Contribution to journalArticlepeer-review

24 Scopus citations


The majority of female Red-winged Blackbirds (Agelaius phoeniceus) given exogenous estradiol responded to playback of male song with copulation solicitation. Nine females given no exogenous estradiol all failed to give any displays in response to playback. We conclude that estradiol treatment is necessary to elicit response to playback in captive female Red-winged Blackbirds. Given the task of discriminating full conspecific song from a partial song, females treated with a double dose of estradiol showed a degree of discrimination nearly identical to that shown by females treated with a single dose. Variation in estradiol dosage appears not to have a strong effect on discrimination.

Original languageEnglish (US)
Pages (from-to)826-828
Number of pages3
Issue number3
StatePublished - Jan 1 1997


  • Agelaius phoeniceus
  • Estradiol
  • Playback
  • Red-winged Blackbirds
  • Song

ASJC Scopus subject areas

  • Animal Science and Zoology


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