Caspian Tern

Caspian Tern Hydroprogne caspia

Abundance map

Caspian Tern, Abundance map
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Data provided by eBird

Caspian Tern

Hydroprogne caspia

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
1.1
669.59
Breeding season
May 31 - Jul 13
0
1.1
669.59
Non-breeding season
Nov 23 - Mar 1
0
1.1
669.59
Pre-breeding migratory season
Mar 8 - May 24
0
1.1
669.59
Post-breeding migratory season
Jul 20 - Nov 16
0
1.1
669.59
Note: Seasonal ranges overlap and are stacked in the order above; view full range in season maps.
Seasons timeline
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