Penguins are too heavy for their short little wings to support them in the air. Under water, however, their flippers propel them quite well.
Penguin
a penguin cant fly because its heavy also because they have smal feathers called pin feathers
a penguin and a dodo bird. they cant fly Also an Ostrich!
no they cant fly because it weighs down their wings
Penguins cant fly.
you cant
they cant fly!!!!!!!!! :D
because they don't have wings
horses cant fly
you cant fly ? your not a bird? you dont have wings -_-
The wing structure is totally thin making hard for the birds to fly!!!!!
its a metaphor you cant fly with wings on the outside but you can on the inside