“My husband and I heard a big crash at 5 a.m., like something had fallen off the roof. Later he found this feather mass on the ground.”
"Showed this to my wife (ornithologist and zookeeper of 15+ years). The inside vary likely has fly eggs on it and the feathers are likely from a duck. But she has never seen a feathered mass grown off of a bird like this." © hsudude22 / Reddit.
and without the exact time when rome should've looked like this it's worthless. But I think that's more a problem of the internet sharing this pic without crutial information.