There are two Sandwich terns among the group. they are the once with the pale orangish bill tip. great shot
I’d have to chime in with a vote for Common Tern, at least for the bird with raised wings, due to the white rump.
White-cheeked non-breeders would have a grey rump and also generally darker tone to the underside
If I am not mistaken, those are some adorable white-cheeked terns. I am not that great when it comes to birds but I am pretty confident in this one. I really like those because they're really cute. Nice shot by the way.
Thank you for that. Based on the Birds of the World website these tern are indeed White Cheeks as non-breeding adult mixed with immature and juveniles. Thank you again.