They roll their bodies to turn, and do not adjust their wings
differentially

http://www.npr.org/2011/12/02/143055124/flight-of-the-wild-pigeon

The method for slower flying birds.

http://www.npr.org/templates/rundowns/rundown.php?prgId=5&prgDate=12-02-2011.
Go to
Flight Of The Wild Pigeon.