Bird
Caspian Tern
Hydroprogne caspia · Laridae · Charadriiformes
Best monthsApr–May · Augmost records
Records2,501,526in 108 countries
Most seen inUnited States1,468,616 records
Red ListLeast concernIUCN status
About
Caspian Tern in brief
The caspian tern (Hydroprogne caspia) is a bird of the Laridae family — species of bird.
Across the 108 countries we cover it has 2,501,526 published records, most of them from the United States, Canada and Sweden. It is strongly seasonal: records peak in April, May and August and fall to their lowest in February and December.
Its global conservation status is least concern on the IUCN Red List.
Records by month
All countries combined · the strongest months highlightedJFMAMJJASOND
Where & when
When to look in each country
United States1,468,616 records · best May, Aug
Canada223,935 records · best May, Aug
Sweden195,849 records · best Jul, Aug
Australia175,086 records · best Oct, Nov
Finland59,591 records · best May, Jul
New Zealand51,804 records · best Jan, Nov
Denmark38,723 records · best Aug, Jul
Mexico36,825 records · best Jan, Feb
South Africa36,736 records · best Jan, Nov
Taiwan34,230 records · best Jan, Dec
Netherlands33,520 records · best Aug, Sep
Spain20,674 records · best Sep, Apr
France18,434 records · best Sep, Apr
Portugal10,873 records · best Oct, Jan
Israel10,536 records · best Mar, Apr
Estonia7,785 records · best Aug, Jul
United Arab Emirates6,740 records · best Jan, Nov
Thailand5,376 records · best Feb, Jan
Cuba5,128 records · best Mar, Feb
Gambia5,040 records · best Nov, Jan
Senegal4,570 records · best Jan, Feb
Sri Lanka4,119 records · best Feb, Jan
Germany3,450 records · best Aug, Sep
Oman3,430 records · best Nov, Feb
China3,332 records · best Apr, Sep
Namibia2,774 records · best Nov, Sep
Poland2,326 records · best Aug, Sep
Egypt2,244 records · best Apr, Mar
Kuwait2,150 records · best Apr, Jan
Greece2,052 records · best Sep, Oct
Türkiye1,753 records · best Apr, May
Morocco1,669 records · best Mar, Apr
Saudi Arabia1,546 records · best Mar, Apr
El Salvador1,400 records · best Feb, Jan
Iran1,372 records · best Feb, Jan
Italy1,354 records · best Apr, Sep
Romania1,348 records · best Aug, Sep
Ukraine1,162 records · best Aug, Sep
Norway1,093 records · best Jun, Jul
Nicaragua1,085 records · best Feb, Mar
Mozambique1,018 records · best May, Jun
Bulgaria971 records · best Sep, Aug
Mongolia845 records · best Jun, Jul
Austria719 records · best Sep, Aug
Czechia656 records · best Apr, Sep
Kazakhstan626 records · best May, Jun
Lithuania505 records · best Aug, Apr
Tunisia476 records · best Dec, Feb
Madagascar449 records · best Nov, Oct
Mauritania357 records · best Mar, Jan
Latvia333 records · best Aug, Jul
Switzerland298 records · best Sep, Aug
Azerbaijan297 records · best Sep, Oct
Georgia291 records · best Sep, Oct
Qatar291 records · best Feb, Mar
Mali261 records · best Oct, Jan
Pakistan251 records · best Mar, Sep
Dominican Republic248 records · best Mar, Feb
Angola243 records · best Sep, Aug
Hungary242 records · best Apr, Aug
Jordan220 records · best Apr, Mar
Bahrain197 records · best Nov, Jan
Guinea-Bissau186 records · best Jan, Mar
Albania165 records · best Oct, Sep
Croatia146 records · best May, Apr
Yemen123 records · best Feb, Oct
Serbia121 records · best Aug, Sep
Belarus120 records · best Aug, Apr
Uzbekistan120 records · best May, Apr
Jamaica99 records · best Jan, Feb
Slovakia94 records · best Apr, Jun
Gabon92 records · best Sep, Aug
Djibouti72 records · best Sep, Feb
Montenegro56 records · best Sep, Apr
Guinea54 records · best Jan, Feb
Bahamas47 records · best Oct, Nov
Sudan47 records · best Jan, Dec
Slovenia46 records · best Apr, Aug
Seychelles45 records · best Mar, Apr
Ireland39 records · best Jul, Aug
Cape Verde36 records · best Apr, Mar
Cyprus35 records · best Apr, Mar
Malta29 records · best Oct, Sep
Libya29 records · best Sep, Oct
Eritrea21 records · best Feb, Jan
Kyrgyzstan21 records · best May, Jun
Iceland16 records · best Jul, Jun
Haiti15 records · best Mar, Apr
Tajikistan15 records · best Sep, Apr
Moldova14 records · best Apr, Sep
Armenia14 records · best May, Jun
Iraq14 records · best May, Apr
Syria14 records · best May, Apr
Niger12 records · best Sep, Nov
Burkina Faso7 records · best Oct, Jan
North Macedonia6 records · best Apr, May
Togo6 records · best Nov, May
Turkmenistan5 records · best Jul, Jun
Lebanon4 records · best May, Sep
Luxembourg3 records · best Apr, Jan
Kosovo3 records · best May, Jan
Saint Kitts and Nevis3 records · best Jun, Jan
Maldives2 records · best Feb, Jan
East Timor2 records · best Jan, May
Bosnia and Herzegovina1 records · best Mar, Jan
North Korea1 records · best Apr, Jan
Barbados1 records · best Nov, Jan
Fiji1 records · best Sep, Jan
Map
Where it has been recorded
Density of published records; brighter cells have more records.
Relatives
All birds
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