For some reason, a Canadian couple apparently hired an owl to serve as their ring bearer under the assumption that nothing would go wrong. Well, the owl—like most birds completely unable to reconcile the concept of windows—fucked up.
Oh, that thud. What a remarkable thud.
This bird is rather reminiscent of Errol. Poor Errol. Luckily, the Weasleys had another pet that overshadowed Errol's failings.
And presumably the owl/ring bearer is OK. Since the footage, which has only now come online via ViralHog, took place back in September 2015, the owl has had plenty of time to recuperate.