No, they just land on the shady side of things and sit there. You can pick them up by grabbing their wings. You can set them down and they don't try to fly away. They are the most passive critters going. They'd make great pets if they lived more than a couple days.
See the pic at the top of the page. The main body is an inch or so long and the tail part is another inch.
I remember riding my bike on them as a kid. Crunchy and slippery.
As far as I know....they don’t.