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Take a quick look at the breeding distribution of European birds and you will see that there are a surprising number of species that are restricted to the Balkans.
Yet, in the late 1970s there still were six colonies with about 40 breeding pairs left, but in the early 1990s only two colonies and 22 pairs persisted (of which only 13 bred in 1991) – five of them in this gorge. Due to mass wolf poisonings in the 1960s and the 1970s, Griffon Vultures in Serbia suffered a dramatic population crash.
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