Sri Lankan Sea Birds Checklist

PROCELLARIIFORMES (SHEARWATERS, PETRELS AND STORM-PETRELS)
Petrels (Procellariidae)
01. Cape Petrel (Daption capense)
02. Barau’s Petrel (Pterodroma baraui)
03. Bulwer’s Petrel (Bulweria bulwerii)
04. Jouanin’s Petrel (Bulweria fallax)

Shearwaters (Procellariidae) 
01. Streaked Shearwater (Calonectris leucomelas)
02. Wedge-tailed Shearwater (Puffinus pacificus)
03. Flesh-footed Shearwater (Puffinus carneipes)
04. Short-tailed Shearwater (Puffinus tenuirostris)

Storm-Petrels (Hydribatidae)
01. Wilson’s Strom-Petrel (Oceanites oceanicus exasperatus)
02. Wilson’s Storm-Petrel (Oceanites oceanicus oceanicus)
03. Swinhoe’s Storm-Petrel (Oceanodroma monorhis)

PELICANIFORMES (TROPICBIRDS, GANNETS AND FRIGATE-BIRDS)
Tropicbirds (Phaethontidae)
01. White-tailed Tropicbird (Phaethon lepturus lepturus)
02. Red-billed Tropicbird (Phaethon aethereus indicus)

Gannets 
01. Masked Booby (Sula dactylatra melanops)
02. Brown Booby (Sula leucogaster plotus)
03. Red-footed Booby (Sula sula rubripes)

Frigate-birds (Fregatidae)
01. Lesser Frigatebird (Fregata ariel iredalei)
02. Great Frigatebird (Fregata minor aldabrensis)
03. Christmas Frigatebird (Fregata andrewsi)

CHARADRIIFORMES (GULLS AND TERNS)
Gulls (Laridae)
01. Sooty Gull (Larus hemprichii)
02. Heuglin’s Gull (Larus heuglini heuglini)
03. ‘Steppe’ Gull (Larus [heuglini] barabensis)
04. Great Black-headed Gull (Larus ichthyaetus)
05. Brown-headed Gull (Larus brunnicephalus)
06. Common Black-headed Gull (Larus ridibundus)
07. Slender-billed Gull (Larus genei)

Terns (Sternidae)
01. Gull-billed Tern (Gelochelidon nilotica nilotica)
02. Caspian Tern (Hydroprogne caspia)
03. Lesser Crested Tern (Thalasseus bengalensis bengalensis)
04. Great Crested Tern (Thalasseus bergii thalassina)
05. Great Crested Tern (Thalasseus bergii velox)
06. Sandwich Tern (Thalasseus sandvicensis sandvicensis)
07. Roseate Tern (Sterna dougallii korustes)
08. Black-naped Tern (Sterna sumatrana)
09. Common Tern (Sterna hirundo longipennis)
10.Common Tern (Sterna hirundo tibetana)
11. Little Tern (Sterna albifrons sinensis)
12. Saunders’s Tern (Sterna saundersi)
13. Bridled Tern (Sterna anaethetus antartica)
14. Sooty Tern (Sterna fuscata nubilosa)
15. Whiskered Tern (Childonias hybrida hybridus)
16. White-winged Tern (Childonias leucopterus)
17. Brown Noddy (Anous stolidus pileatus)
18. Black Noddy (Anous minutus worcesteri)
19. Lesser Noddy (Anous tenuirostris tenuirostris)

Source
de Silva Wijeyeratne, G. (2007). A Pictorial Guide and Checklist of the Birds of Sri Lanka. Jetwing Eco Holidays: Colombo. 64 pages. A4.