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Threats to Loons

At the southern edge of their species range and at the top of the food chain, Adirondack loons are an important biological indicator species. By studying and protecting them, researchers are able to monitor environmental stresses that threaten countless other species.

Pollution

Common Loons are impacted by airborne mercury pollution and acid rain, which are transported long distances in the atmosphere and accumulate in aquatic ecosystems. They also become tangled in abandoned fishing line, and they ingest lead fishing tackle which causes lead poisoning.

Climate Change

Loon nests are very vulnerable to water level fluctuations. Torrential rains and strong storms, which are increasing in frequency and intensity in the Adirondacks, can flood a nest in a matter of hours.

Human Disturbance

Loon families or nesting loons are easily disturbed by boaters and paddlers. Shoreline development can also limit nesting sites.