Question Author
Ooops, I put my reply on the wrong thread so I have copied it on here!
The Winner - I may have a go at your suggestion as I have looked it up and they are genuine sea birds. I've never heard of them in that context before!
bhg481 Thank you, now I have a dilemma! I have used Harrier for another question as the clue was Jump Jet but now I have to chose one of your others