Roseate Tern

Roseate Tern Sterna dougallii

Abundance map: Pre-breeding migration

Roseate Tern, Abundance map: Pre-breeding migration
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Data provided by eBird

Roseate Tern

Sterna dougallii

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
Apr 12 - May 17 Learn more