Why Are Common Loon Chicks Becoming Less Common?

22 January 2021
Loon with chick
Common loon adult with small chick. DARWIN PARK

BY KRISTIN BIANCHINI

Measuring loon productivity is also an excellent indicator of lake health. As top predators, loons are sensitive to damage at lower levels of the food chain. For example, processes that decrease the number of fish in a lake can cause food shortages, especially for young loons. Being a top predator also makes loons more vulnerable to pollutants, like acid rain and mercury.

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