Heermann's Gull

Heermann's Gull Larus heermanni

Range map: Post-breeding migration

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

Larus heermanni

Range: Post-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 post-breeding migration season.  Learn more

Occurrence
Post-breeding migratory season
Season date range
May 24 - Jul 13 Learn more