So this is just a case of it having sharper claws and being much bigger, the injuries are purely accidental because it's only removing chunks of people because it's trying to settle on their heads and they're not obliging
i'm not an expert, but the wkikipedia article informs me that egg-laying begins in late winter. i remember that one summer more then 15 years ago a female common buzzard flew (mock) attacks against me when i came too close to her nest and in 2004 i encountered a similiar case with another buzzard during i a bike tour where joggers were asked on flyers to choose another route... ---so i wonder if a nest with eggs/ young ones might be the reason?!