Bald Eagle – Common Loon Interaction Study

Bald Eagle and Common Loon populations in New Hampshire were historically low, but have been in recovery due to active monitoring and management. Both species are still listed as threatened in the State of New Hampshire. Among many other threats facing Common Loons, Bald Eagles have been known to prey on young birds and incubating adults. Managing interactions between these species of conservation concern has been difficult, as most evidence is anecdotal and scientific evidence is needed to make sound management decisions.

Bow Lake Loon and Eagle encounter on 6-15-13. Photo by Jon Winslow.

Bow Lake Loon and Eagle encounter on 6-15-13. Photo by Jon Winslow.

This project aims to determine whether or not New Hampshire’s increasing Bald Eagle population is negatively affecting Common Loon occupancy and productivity, and make recommendations relative to managing both species.

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 Project Leader: Vanessa Jones