Strandzha is situated on Via Pontica, the second-largest bird migratory route in Europe. The bays and estuaries along the Black Sea coast are a wintering destination for some birds. There are 269 avian species in the park, including populations of global importance of white-backed woodpecker, semi-collared flycatcher, olive-tree warbler and sombre tit, as well as populations of European importance of Egyptian vulture, white stork, black stork, Eurasian eagle owl and four eagle species.