This theory is depressing. And by that, I mean, really depressing.
In the final installment of the Harry Potter franchise, Ron, Hermione, Mundungus, Fleur, Fred, and George all transform themselves into Harry through the use of Polyjuice Potion. This way, if any Death Eaters were waiting for them as they went to the Burrow, they wouldn't be able to tell which Harry was the real one.
During the battle, the Death Eaters attack them. At one point, Hedwig is struck with a Killing Curse by the Death Eater seen in the picture above. It has been said that the Killing Curse was intended for Hagrid, but I don't think this was ever established.
The theory says that Snape is the one that killed Hedwig and he had to do it because he didn't want anyone to know that that Harry was the real Harry.
Now we know that Snape participated in the Battle of the Seven Potters because when Harry looks in Snape's memory near the end of the book, he sees that he is the one that severed George's ear (this was done by accident) in the battle.
Snape may have killed Hedwig on purpose so that none of the other Death Eaters or Voldemort would not know that was the real Harry. The Death Eater that killed Hedwig was never properly identified, so this is definitely plausible.'
Do you think it's true?