Black fly outbreak forcing loons to abandon nests | Duluth News Tribune

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A loon sits atop her nest. (News Tribune file photo)

Black fly outbreak forcing loons to abandon nests

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An outbreak of black flies in northern Wisconsin is causing nesting loons to abandon their eggs in record numbers.

The loons are being affected by a larger-than-normal swarm of one specific species of black fly, according to Chapman University researcher Walter Piper.

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