were you dressed up in a giant sardine costume?
this is bizzare indeed. my guess is that a bird would not attack you but rather something you were wearing triggered the beligerant attitude. you mentioned it attacked your face so it may be that you mask by sunlight reflection looked like a silvery juicy fish, hence the bump. It does not explain the vicious attacks
at the surfice though unless the bird attacked its own reflection in your mask glass. freaky story nonetheless!
