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Stereotyped foraging behavior of the swainson's warbler

机译:斯温森莺的定型觅食行为

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I studied the foraging behavior of 399 individuals of Swainson's Warbler (Lim- nothlypis swainsonii) during the breeding season at more than 70 localities in the osutheast- ern United States. Swainson's Warbler is a terrestrial dead-leaf specialist and "leaf-lifting" was the principal search/attack maneuver of all observed individuals. Pattering or vibration of feet is an important but previously unrecognized behavior associated with foraging in leaf litter. Observations indicate that leaf litter is a critical component of Swainson's Warbler habitat on breeding and winter territories and at migratory stopovers.
机译:我研究了繁殖季节在美国东南部70多个地方的399只Swainson的鸣鸟(Limnothlypis swainsonii)的觅食行为。斯温森的鸣鸟是陆地上的死叶专家,“抬叶”是所有观察到的个体的主要搜寻/攻击手段。脚的敲打或振动是重要的,但以前未认识到与凋落物觅食相关的行为。观察结果表明,在繁殖区和冬季地区以及迁徙中途停留时,落叶是施温森莺栖息地的重要组成部分。

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