Legend of Dinosaurs & Monster Birds (恐竜・怪鳥の伝説, Kyōryū Kaichō no Densetsu, lit. Legend of Dinosaurs and Ominous Birds), also known in the U.S. as The "Legend of Dinosaurs", is a 1977 Japanese kaiju science fiction film produced and distributed by Toei Company. The film was initially unsuccessful in Japan, but later became an overseas blockbuster in the Soviet Union.