Intraspecific signaling function of Crown Coloration in Mountain White-Crowned Sparrows
Abstract
There is evidence showing that large differences between age/sex categories in crown morphology of white-crowned sparrows are used to signal status. We investigated the role of more subtle crown characteristics, specifically the proportion of the crown that is white, as a signal used to mediate aggression. The response of resident white-crowned sparrows was measured when decoys with experimentally altered crowns were placed on their territory. We found significant differences between a large and small proportion white decoy treatments when the birds were still nesting early in the season, suggesting proportion white is used as a signal in this system. However, we found no significant results later in the season or when all the trials were analyzed as a whole, suggesting a strong seasonality effect in the responsiveness of the birds.
Local Knowledge Graph (16 entities)
Knowledge graph centered on Intraspecific signaling function of Crown Colorati with 17 nodes and 56 connections. Top connected: Zonotrichia leucophrys, Zonotrichia leucophrys oriantha, White-crowned sparrow, Zonotrichia leucophrys pugetensis, Zonotrichia leucophrys gambelii.
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References (20)
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