They don't have wings.
no it is scientifically proven that pigs cant and never will fly
pigs can't fly because nobody has put wings on them and taught them how to. ask a scientist about the how can you test this stuff, but i know that one day pigs will fly. so don't stop believing that pigs will fly, maby YOU will be the one to make pigs fly, who knows?
penguins cant fly, and chickens cant propperly fly!
some birds are to big for their wings to make them fly
Penguin
Fly backwards
well, a bird that cant fly has a larger body mass than one that can
no they cant fly because it weighs down their wings
it just did ok
nobody it cant happen it was just introduced to storys and fairytails :)
yes, chickens are birds even if they cant fly
They cant fly...