It was a hint rather than a true question In this case, being more specific, the collective noun would be a convocation (although congress is sometimes used).
Volcanoes come to mind, well the God thereof, preceded by the a member of the clergy perhaps? The latter namesake version was a very nice delta wing. And it does look a bit like a pig that could fly!
You guys are too good! Indeed it is the Vickers Vulcan nicknamed "The Flying Pig" for its looks and its flying qualities. Eight were built in the '20s and were based on the Vimy bomber. I rather like it, being of the slightly rotund persuasion myself. Next time I'll just give you a picture of a nosewheel or a couple of rivets - I'm sure you'll get it John
Came across this one in a very fragile AA aircraft recognition book. Have to confess I'd not heard of the manufacturer before. So over to you guys!
No takers? Cryptic clue time. Sounds like "an imaginary circle in a plane perpendicular to the planes of the celestial equator and horizon, in a blind one".