The Wrong Brother.

The initial idea was to jump off the window and start flapping the wings and maneuver away into the oblivion. But he felt that the trees were a bit tricky and calculations always ended uncertain. He did not want a speck of uncertainty anywhere. That's when he decided to use the tree itself as the solution. That fateful day he climbed up the tree and jumped off it wearing the wings and fell down and died flapping his wings on the ground. 
Mr.X, avid collector, art connoisseur and the da Vinci expert in the Town Council, died in a freak accident, falling of the balcony, his manager announced to the press. No one, including the press, was allowed inside the house. His relatives were unavailable for comment.