Smaller Gulls and Noddies

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Sooty Gull
(දුම්බුටු ගලුවියා)
Ichthyaetus hemprichii

Yet to capture image

Vagrant species
 
Brown-headed Gull-6
Brown-headed Gull-6

Photographed in the outskirts of Jaffna.

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Brown-headed Gull-1
Brown-headed Gull-1

Photographed in Mannar.

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Brown-headed Gull-5
Brown-headed Gull-5

Photographed in the outskirts of Jaffna.

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Brown-headed Gull-6
Brown-headed Gull-6

Photographed in the outskirts of Jaffna.

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Brown-headed Gull
(බර-හිස ගලුවියා)
Chroicocephalus brunnicephalus

I believe these are Brown-headed Gull's (not Common Black-headed Gull's) based on the yellow iris, white eye ring and white mirrors on black wing-tips.

 

First they were seen in Mannar. (Images 1 to 4) I came across another casually floating in the Jaffna lagoon near the Sangupiddi causeway on a different trip. (Images 5 and 6)

 
Common Black-headed Gull-1
Common Black-headed Gull-1

Photographed in Bundala National Park.

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Common Black-headed Gull-2
Common Black-headed Gull-2

Photographed in Bundala National Park.

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Common Black-headed Gull-4
Common Black-headed Gull-4

Photographed in Bundala National Park.

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Common Black-headed Gull-1
Common Black-headed Gull-1

Photographed in Bundala National Park.

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Common Black-headed Gull
(කලු-හිස් ගලුවියා)
Chroicocephalus ridibundus

Photographed in Bundala National Park, this solitary gull was among other terns. Based on size, the less prominent blackness on the beak, I'm fairly certain this is a Black-headed and not a Brown-headed.

Doubtful identification
 
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Slender-billed Gull
(හීන්-තුඩු ගලුවියා)
Chroicocephalus genei

Yet to capture image

Vagrant species
 
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Brown Noddy
(බොර නිදිලිහිනියා)
Anous stolidus

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Vagrant species
 
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Lesser Noddy (හීන් නිදිලිහිනියා)
Anous tenuirostris

Yet to capture image

Vagrant species