These include capercaillie, hazel grouse, peregrine falcon, European honey-buzzard, black stork and Eurasian pygmy owl. Examples of birds are the endangered Bengal florican, the sarus crane, and the black stork. A wary species, the black stork avoids contact with people. The popularity of eugenics and "The Black Stork" both declined simultaneously with World War II. The black stork has brown irises, and bare red skin around its eyes. Unlike the closely related white stork, the black stork is a shy and wary species. Other native species include the black stork, common crane, silver seagull, willow grouse, and dunlin.