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Mixed-species flock sizes and compositions influence flock members’ success in three field experiments with novel feeders
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Mixed-species flock sizes and compositions influence flock members’ success in three field experiments with novel feeders
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Journal Article
Mixed-species flock sizes and compositions influence flock members’ success in three field experiments with novel feeders
2024
Overview
Mixed-species groups and aggregations are quite common and may provide substantial fitness-related benefits to group members. Individuals may benefit from the overall size of the mixed-species group or from the diversity of species present, or both. Here we exposed mixed-species flocks of songbirds (Carolina chickadees, Poecile carolinensis , tufted titmice, Baeolophus bicolor , and the satellite species attracted to these two species) to three different novel feeder experiments to assess the influence of mixed-species flock size and composition on ability to solve the feeder tasks. We also assessed the potential role of habitat density and traffic noise on birds’ ability to solve these tasks. We found that likelihood of solving a novel feeder task was associated with mixed-species flock size and composition, though the specific social factor involved depended on the particular species and on the novel feeder. We did not find an influence of habitat density or background traffic noise on likelihood of solving novel feeder tasks. Overall, our results reveal the importance of variation in mixed-species group size and diversity on foraging success in these songbirds.
Publisher
Public Library of Science,Public Library of Science (PLoS)
Subject
