Thank you so much, everyone, for the nice comments. Isn't he great? A great deal bigger than a Common Tern. I just added a shot of a Common Tern for comparison in a note.

So amazing, amazing, amazing!!! Love the main picture and love the insets. So impressive, your timing is just GREAT!!

I can't tell the difference between the two types but I bet one is a slightly different size or I'm not noticing a key difference. They are both lovely. Grats on getting these pictures!!!! *high five*

LOL, just read the comment you wrote above...*cackle* YES, it's a size difference! :D What would I do without you?! :D

Lol. Yes, size sometimes does make a difference!! :) :)
Oh, and look at the bill. The Caspian Tern has a much more massive bill than the Common Tern.
Thank you so much for your great comment, Janet.

Thank you very much, Christina. They're quite impressive birds.

Thank you very much, everybody, for the kind comments.

Merci beaucoup, Luciano.

Thank you, Catherine and Bernie! Much appreciated.