We think this hadeda was shot with a pellet gun

This poor hadeda was in our garden, just sitting on the grass and breathing rapidly. Its mate was sitting on a wall nearby, but would occassionally fly down to be close to its mate, who was looking scared and hurt. The hadeda had a wound near its eye that looked like a bullet wound. We suspect from a pellet gun. It was saddening to see this beautiful bird in pain on the gound when it should have been able to fly around. It's one leg was squashed under its body too. The bird was really weak when we found it, and the spca didn't come in time after we phoned them. This poor hadeda died, and it was about two hours before its mate left the scene.