在非繁殖季节，受威胁的加利福尼亚海岸捕蚊(Polioptila californica)的觅食偏好

Pub Date : 2023-01-01 DOI:10.5751/jfo-00269-940206

K. Clark, K. Ferree, Kylie Fischer, Stephen Myers

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引用次数: 0

摘要

．我们研究了受联邦威胁的加利福尼亚海岸捕蚊器(Polioptila californica)的觅食行为，这是一种专性食虫动物，在非繁殖季节，由于季节性干旱和寒冷冬季风暴的发生，这种非迁徙的雀形目动物的存活率降低。在秋季(10 - 11月)的季节性干旱期，加州捕蚊者优先在秋季开花的灌木中觅食，如土狼丛(Baccharis pilularis)。

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Foraging preferences of the threatened coastal California Gnatcatcher ( Polioptila californica ) during the non-breeding season

. We studied the foraging behavior of the federally threatened coastal California Gnatcatcher ( Polioptila californica ), an obligate insectivore, during the non-breeding season, a period of reduced survivorship for this non-migratory passerine due to seasonal aridity and the onset of cold winter storms. During the seasonal dry period in fall (October–November), California Gnatcatchers preferentially foraged in fall-blooming shrubs such as coyote brush ( Baccharis pilularis )

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