Bridled or sooty tern? - Penguin Island, Western Australia (1 Viewer)

[lowressgbirding]

Hi,

This tern's back appeared much darker than the other bridled terns on the island, with less contrast with its head, so I wonder if it could be a sooty tern? However, i note the white supercilium extends quite far back, which I understand could be a diagnostic for bridled terns.

Any confirmation on the ID would be appreciated.

Thanks.

 

[lou salomon]

It's a Bridled Tern.

 

[lowressgbirding]

It's a Bridled Tern.

Thank you