Understanding the Social Dynamics of Loon Territory Holders and Outsiders

A common loon adult on the lake’s surface with its chick by its side. Both are facing away from the camera, but the adult’s head is turned to the right, showing its side profile.
Photo by Brandi Grahl
Two common loons face each other on a lake. The one on the left has its wings outstretched and neck craned forward.
Photo by Karen Field
graph showing chick age (days) on the x-axis and number of yodels on the left y-axis (red line) and number of aggressive behaviors on the right y-axis (blue line). The red line for yodels peaks at chick age 0 then declines after that. The blue line for aggressive behaviors increases to peak around 15–20 days and generally declines after that.
Graph from Piper et al. 2022



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National Loon Center

National Loon Center

The National Loon Center restores and protects loon breeding habitats, enhances responsible recreation, and catalyzes critical loon and freshwater research.