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Concentrations of common loons

By Upper Midwest Environmental Sciences Center
concentrations of common loons (warmer colors indicate higher densities)
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Detailed Description

The abundance and distribution of waterbirds are determined during aerial surveys of Lake Michigan.  This graphic depicts concentrations of common loons (warmer colors indicate higher densities) in survey areas that were estimated from individual common loon observations (dot size is related to number of loons observed).

Sources/Usage

Public Domain.