Taking off

A stork was standing in the middle of a pond in Houston Zoo. I set up my camera on a tripod using a 28mm wide angle lens and shuttle priority of 1/125. A bystander suggested to throw a stone to make the stork fly. I disagreed because it would cause the stork to fly away from me, while I wanted to take a picture of it flying toward me. After one and half hour waiting, the stork took off and I snapped the only photo of the stork.