I can believe that some birds might fly too close to the bottom of a very active thunderstorm and find themselve spat out the top.
William Rankin: In 1959, Lt. Col. William Rankin was flying at 47,000 feet when he had to eject from his F8U jet over Norfolk, Virginia due to an engine failure. He parachuted into the middle of a severe thunderstorm that carried him over 65 miles to Rich Square, North Carolina. The trip took over 40 minutes.
Didier Dahran: In May of 1993, Frenchman Didier Dahran parachuted at 1,000 feet and was caught in a cyclone that lifted him to 25,000 feet. His first parachute collapsed at that point and he used his reserve to descend to earth some 30 miles from where he started. The incident happened in the vicinity of Boulac, France.
Mathieu Gagnon: In June of 2002, Gagnon was sucked into a dark storm cloud while parachuting in Ontario and was pulled up by the storm. After rising 1,000 meters, he cut away his main parachute and fell out of the clouds. Using his reserve he came down about 25 kilometers south of the airfield where he was supposed to land.
http://www.greenharbor.com/fffolder/unlucky.html
Doesn't sound like fun.