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Winter Movements by Rosy Finches in Montana (Movimientos Durante el Invierno de Leucosticte arctoa en Montana)
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Winter Movements by Rosy Finches in Montana (Movimientos Durante el Invierno de Leucosticte arctoa en Montana)

著者: Jon E Swenson; Kent C Jensen; John E Toepfer
版本/格式: 文章 文章 : 英语
刊登在:Journal of Field Ornithology, Spring, 1988, vol. 59, no. 2, p. 157-160
数据库:JSTOR
提要:
During the winter of 1985-1986 Rosy Finches (Leucosticte arctoa) were trapped and banded at two sites, 40 km apart, in southwestern Montana. We documented between-site movement by seven finches, representing two color phases, both sexes, and movement in both directions. Wintering Rosy Finches feed on seeds, a patchy and ephemeral food source. They may move within a large area during winter to locate alternate food  再读一些...
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文件类型: 文章
所有的著者/提供者: Jon E Swenson; Kent C Jensen; John E Toepfer
ISSN:0273-8570
OCLC号码: 486708714
语言注释: English
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摘要:

During the winter of 1985-1986 Rosy Finches (Leucosticte arctoa) were trapped and banded at two sites, 40 km apart, in southwestern Montana. We documented between-site movement by seven finches, representing two color phases, both sexes, and movement in both directions. Wintering Rosy Finches feed on seeds, a patchy and ephemeral food source. They may move within a large area during winter to locate alternate food sources. /// Durante el invierno del 1985-1986 se anillaron especimenes de Leucosticte arctoa en dos localidades del suroeste de Montana distanciadas por 40 km. Aves (un total de siete) de ambos sexos y de dos fases de coloración se movieron en ambas direcciones entre las localidades. Las aves se alimentaron de semillas; fuente de alimento efímera y localizada en parchos. Se especula que durante el invierno, los pajaros se muevan dentro de un área de considerable tamaño tratando de localizar fuentes alternas de alimentos.

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