By the mid-70s, white storks were extinct in many areas. The resettlement of storks is the reason that, nowadays, there are storks in Baden-Wuerttemberg. Here, at Affenberg Salem a free-flying colony of white storks was established by reintroducing some breeding pairs. Although, these breeding pairs were kept from flying south and, thus, have lost their instinct to fly southwards during the winter months, their young spend their winters in Africa or southern Spain. This is genetically determined. All young storks raised at Affenberg Salem migrate to the south during winter.