I’m pretty sure their is no evidence for flying pigs so I have to say sorry, I don’t believe in them.
Will they ever evolve? As far as I understand for pigs to evolve the ability to fly you’d need two things;
1. A lot of time,
2. Pigs who developed the ability to fly to be more advantageous than those that can’t….
I’m not a biologist though, but I’ll believe in flying pigs when…. well, when pigs fly, ha ha
I don’t think pigs have the need to fly, they’ve evolved to be land animals with four legs and no sign of any wing growth. They seem pretty happy rolling around in muck anyway.
Besides, if pigs could fly, would the price of bacon go up?
There’s a rule, I think, about how big a flying beast can be. At a certain point the muscles it would need to get it in the air would be so heavy it couldn’t take off! So no flying porkers. Unless we can find a way to inflate them with Helium.
Could they evolve? Hmm, I think a lot of things would have to change about the pig for it to fly. Would it sprout wings out of it’s back? Or would it have to convert two of it’s legs into wings? It would probably have to be lighter, and more streamlined. It may have to change the way it takes in air. A snout is awesome for rummaging around for food, but would it give a flying pig enough oxygen to flap it’s wings? At what point would it stop being a pig and start being something else entirely?
I also don’t think there are flying pigs. At the moment I doubt they will ever evolve without a little help. There is no real selective pressure for pigs to fly. It’s believed flight’s primary evolutionary advantage is the ability to rapidly change location, whether that be escaping being eaten, getting away from competition or changing habitat because you’re current on just doesn’t suit you. Right now they are, pardon the pun, happy as pigs in muck, and have no real reason to move anywhere quickly.
So many changes would need to take place to a pig physiologically that, if they eventually come to fly, they’d be no good for bacon or sausages anymore.
I just thought I’d send Martin a link. Although I definitely don’t believe pigs will ever gly, and do know the law he’s on about I was amazed watching the BBC’s dinosaur program earlier this year to see they had a dinosaur the size of a giraffe which could fly.