Heermann's Gull

Heermann's Gull Larus heermanni

Range map: Pre-breeding migration

Heermann's Gull, Range map: Pre-breeding migration
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Heermann's Gull

Larus heermanni

Range: Pre-breeding migration

This map depicts the range boundary, defined as the areas where the species is estimated to occur at a rate of 5% or more for at least one week within the pre-breeding migration season.  Learn more

Pre-breeding migratory season
Season date range
Nov 9 - Feb 15 Learn more