Large-scale supplemental feeding alters lay date and nest survival in Eastern Bluebirds but not in two species of chickadees

Robyn L. Bailey & David N. Bonter
Wild bird feeding is a popular and growing activity, with approximately half of households participating in nations including the United States, Canada, the United Kingdom, New Zealand, and Australia. Supplemental feeding can increase survival and reproductive success of birds (which is often a goal of supplemental feeding efforts), but it raises concerns about phenological mismatch, reduced clutch size, or increased risk of nest predation. Our objectives were to test whether access to supplemental food during...
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