Medium-Sized Terns

Common Tern-1
Common Tern-1

Photographed in Bundala National Park.

Common Tern-2
Common Tern-2

Photographed in Bundala National Park.

Common Tern-3
Common Tern-3

Photographed in Bundala National Park.

Common Tern-1
Common Tern-1

Photographed in Bundala National Park.

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Common Tern
(පොදු මුහුදුලිහිනියා)
Sterna hirundo

Based on size, the grey upperparts, hint of red in the beak, I believe these are Common Tern's in non-breeding plumage. Observed and photographed at Bundala National Park, there were 4 of them at the edge of a water hole.

Doubtful identification
Critically Endangered
 
Still to capture photo
Still to capture photo

Still waiting to get lucky and capture image.

Still to capture photo
Still to capture photo

Still waiting to get lucky and capture image.

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Roseate Tern
(අරුනු මුහුදුලිහිනියා)
Sterna dougallii

Yet to capture image

Critically Endangered
 
Still to capture photo
Still to capture photo

Still waiting to get lucky and capture image.

Still to capture photo
Still to capture photo

Still waiting to get lucky and capture image.

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Black-naped Tern
(කලු-ගෙලැසි මුහුදුලිහිනියා)
Sterna sumatrana

Yet to capture image

Vagrant species
 
Still to capture photo
Still to capture photo

Still waiting to get lucky and capture image.

Still to capture photo
Still to capture photo

Still waiting to get lucky and capture image.

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Bridled Tern
(කඩියාලම් මුහුදුලිහිනියා)
Onychoprion anaethetus

Yet to capture image

Vagrant species
Critically Endangered
 
Still to capture photo
Still to capture photo

Still waiting to get lucky and capture image.

Still to capture photo
Still to capture photo

Still waiting to get lucky and capture image.

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Sooty Tern
(දුම්බුටු මුහුදුලිහිනියා)
Onychoprion fuscatus

Yet to capture image

Vagrant species
Critically Endangered