Song exposure during juvenile dispersal in Mountain White-crowned Sparrows

被引：2

作者：

Ho, Winnie W. ^{[1
]}

Connolly, Sara G. ^{[2
]}

Reynolds, Pamela L. ^{[1
]}

Cornelius, Jamie M. ^{[1
,3
]}

MacDougall-Shackleton, Elizabeth A. ^{[2
,4
,5
]}

Morton, Martin L. ^{[6
]}

Pereyra, Maria E. ^{[7
]}

Hahn, Thomas P. ^{[1
,3
]}

机构：

[1] Univ Calif Davis, Dept Neurobiol Physiol & Behav, Davis, CA 95616 USA

[2] Princeton Univ, Dept Ecol & Evolutionary Biol, Princeton, NJ 08544 USA

[3] Univ Calif Davis, Anim Behav Grad Grp, Davis, CA 95616 USA

[4] Western Univ, Dept Biol, London, ON, Canada

[5] Western Univ, Adv Facil Avian Res, London, ON, Canada

[6] Occidental Coll, Dept Biol, Los Angeles, CA 90041 USA

[7] No Arizona Univ, Dept Biol Sci, Flagstaff, AZ 86011 USA

来源：

AUK | 2014年 / 131卷 / 02期

基金：

美国国家科学基金会;

关键词：

birdsong; dialect; juvenile dispersal; learning; White-crowned Sparrow; Zonotrichia leucophrys oriantha; ZONOTRICHIA-LEUCOPHRYS-ORIANTHA; SELECTIVE ATTRITION; BIRD-SONG; SIERRA-NEVADA; DIALECTS; MONTANE; OVERPRODUCTION; EVOLUTION; PATTERNS; BEHAVIOR;

D O I：

10.1642/AUK-12-120-R2.1

中图分类号：

Q95 [动物学];

学科分类号：

071002 ;

摘要：

The degree to which local song structure reflects the singer's population of origin is a long-standing and contentious issue. Young songbirds that settle to breed outside their natal song-dialect area may learn to produce nonnatal dialect by hearing and memorizing these songs during juvenile dispersal. We quantified adult singing rates in a population of Mountain White-crowned Sparrows (Zonotrichia leucophrys oriantha) in the Sierra Nevada in 2 yr, and compared them with the arrival schedule of juveniles not hatched on the study area. Our results show that opportunities for juveniles to learn new (nonnatal) song types become highly limited during the premigratory dispersal phase, because adult singing rates are very low by the time nonlocal juveniles begin to arrive. Thus, if individuals learn nonnatal songs during dispersal, they must do so hearing relatively few repetitions of the unfamiliar dialect.

引用

页码：208 / 214

页数：7

共 50 条

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