SONGS OF THE ALDER FLYCATCHER (EMPIDONAX-ALNORUM) AND WILLOW FLYCATCHER (EMPIDONAX-TRAILLII) ARE INNATE
SONGS OF THE ALDER FLYCATCHER (EMPIDONAX-ALNORUM) AND WILLOW FLYCATCHER (EMPIDONAX-TRAILLII) ARE INNATE
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DOI:
10.1093/auk/101.1.13
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发表时间:
1984-01-01
期刊:
影响因子:
2.8
通讯作者:
KROODSMA, DE
中科院分区:
文献类型:
--
作者:
KROODSMA, DE
The song development of 5 willow flycatchers (E. traillii) and 4 alder flycatchers (E. alnorum) taken from nests at 7-10 days of age was studied. Three willow flycatchers and 4 alder flycatchers were tutored with songs of the other species and 2 willow flycatchers served as controls, hearing only conspecific songs. All 9 subjects, females (when administered exogenous testosterone) and males and experimentals and controls, produced remarkably normal songs; slight differences between songs of wild and experimental subjects could be attributed to motivational states rather than to the effects of acoustic isolation in the laboratory. No microgeographic variation of wild songs, no evidence of learning from a tutor tape,nor any similarity of song characters among kin were found. The vocal development of these suboscine flycatchers is strikingly different from that of typical oscines, where vocal learning is the rule.