[Overnight, the birds that had been missing from the friendly Seattle skies come back in waves. They've changed into violent little creatures intent on attacking everything and everyone in their path. Late night joggers come home with startling cuts across their shoulders and faces, drunks and dealers alike are dive-bombed in the middle of the street and strange squawking can be heard from indoors.
The birds seem to drop dead by morning, but each night through Friday a new wave flies in to replace them. Under examination it seems as though these poor creatures haven't technically been alive for a long time.]