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SURVIVAL OF COMMON EIDER SOMATER/A MOLL/SS/MA ADULT FEMALESAND DUCKLINGS DURING BROOD REARING
unpublished
We studied survival of adult female and duckling Common Eiders during brood rearing at two sites on the Yukon-Kuskokwim Delta. Alaska. in 1997. Duckling survival to 30 daus of age was 19% ± 10% (95% Cl). Seventu-three percent of radio-marked adult females had lost all their ducklings bU 30 days after hatch. Duckling survival was not related to hatch date. We estimate an average of 0.84 ducklings fledged per adult female radio-marked at hatch. Most broods moved to salt water within 15 daus of
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