In this 1995 Japanese film, Gamera, a giant flying turtle, returns to face off against his arch-nemesis, Gyaos, a massive prehistoric bird, who has made Tokyo Tower its nesting ground.

Gamera, the Guardian of the Universe
A teenager on a small atoll discovers a mysterious amulet, which sets off a chain of events as a respected ornithologist searches for a terrifying, unidentified bird species that's wreaking havoc.