A new record – between 26 and 38 pairs of Griffon Vultures breed in Balkan Mountain. Vrachanski Balkan is best represented by the new places of the species.
Preliminary results of Griffon Vultures breeding season in reintroduced colonies in Bulgaria for 2019.
A new – third colony of the griffon vulture was formed in the Vrachanski Balkan Nature Park in 2019 and at present 14 pairs are incubating their eggs. Ten of them are in the northern parts of the Park, and by two pairs nest in the other two colonies in the eastern parts. Four more pairs expressed breeding activity. Thus, according to the preliminary data for 2019, the breeding population of the griffon vulture in Vrachanski Balkan is 14-18 pairs in total.
After about 50 years of absence, the griffon vulture began breeding again in the Vrachanski Balkan Nature Park in 2015 as a result of its successful reintroduction through the release of individuals after 2010. Since then, the number of breeding pairs increases constantly.
In the Eastern Balkan Mountains, three separate colonies were formed in the Kotlenska Planina, where 12 couples are nesting in 2019 and another 7 perform nesting activity. A pair performs breeding activity in the area of Sinite Kamani Nature Park too. Although 3 pairs have given up because of early nesting and subsequent unfavorable weather conditions, they still have a chance of re-laying eggs. Thus, the number of the nesting population of the griffon vulture in the Eastern Balkan Mountains in the beginning of 2019 is 12-20 pairs.
In the Kresna Gorge, the very early laying of an egg from the first pair let it to give updue to bad weather in mid-February. Two pairs still express nesting activity at the moment.
Thus, the total number of colonies of the griffon vulture reintroduced after 2010 became 7 and the number of couples 27-40.
We look forward to colleagues’ data on the autochthonous population of the species in the Eastern Rhodopes to find out whether the psychological threshold of 150 pairs of the species in the country will be overcome.