Forster's Tern

Forster's Tern Sterna forsteri

Abundance map

Forster's Tern, Abundance map
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Data provided by eBird

Forster's Tern

Sterna forsteri

Abundance

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.  Learn more

Relative abundance
Year-round
0
2.08
142.71
Breeding season
Jun 7 - Jul 13
0
2.08
142.71
Non-breeding season
Dec 14 - Mar 8
0
2.08
142.71
Pre-breeding migratory season
Mar 15 - May 31
0
2.08
142.71
Post-breeding migratory season
Jul 20 - Dec 7
0
2.08
142.71
Note: Seasonal ranges overlap and are stacked in the order above; view full range in season maps.
Seasons timeline
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