Tern!
as in:
One good tern deserves another.
Whose tern is it, anyway? (on finding a bird on the beach)
The bird steering the dinghy is a stern tern.
A song about three birds in a row: Tern, Tern, Tern . . .
A quick-thinking bird: a sharp tern.
Forgotten at the station: a left tern.
A bird with correct answers: a right tern.
A common sight in spring: tern over a new leaf.
A bird’s female relative might be a sis tern.
A sad bird is a down tern. (and so is a bird with fluffy under-feathers!)
Overfeeding a bird may lead to a wide tern.
Bird on a tortoise? A slow tern.
{a punny thing happened to the Word for Wednesday}
Add more in the comment section; after all, it’s your tern!
A Random Harvest 
A bird in hospital, an in tern 😉
One with loose morals, slat tern.
That was a very good pun! I’ve run out of ideas, at least for now. ~ Linne
Must be my tern again then. 😛
Ruler of a country? Sul tern
Do Sul terns eat ternips for supper?
nope, sul-tern-as. 😛
Oh, and wa-tern-melon! 😉
A country populated by jailbirds (we know where that is, don’t we 🙂 Consternation
HA! 😉
A ternip terned-up in my mittern…
I will leave no tern unstoned…
(hmmm…….). 😛
Lol! I am just satisfied to watch the real terns out on the bay! 😉
Well this certainly bright tern ed up my day. 😉
Where birds eat dinner? Tern Table
Well, all I can say is “Tern about is fair play”…
I think it’s your tern now (or some other hapless reader who has seen what happens when I post late at night…)
Wait… What a fashionable bird wears: Tern Style!
I thought fashionable birds wore tern ups. 😉
Oh I must think of one…..A very bright Tern is a Lan tern!
I wonder if a bird in the hand is a Mittern…