Heermann's Gull

Heermann's Gull Larus heermanni

Abundance map: Pre-breeding migration

Heermann's Gull, Abundance map: Pre-breeding migration
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Data provided by eBird

Heermann's Gull

Larus heermanni

Abundance: Pre-breeding migration

This map depicts the seasonally-averaged estimated relative abundance, defined as the expected count on an eBird Traveling Count starting at the optimal time of day with the optimal search duration and distance that maximizes detection of that species in a region, averaged across the pre-breeding migration season.  Learn more

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