Limiting Factors Affecting Reproductive and Demographic Indicators of Black Vulture (Aegypius Monachus)

Gradual decrease in reproductive and demographic indicators of black vultures in Azerbaijan territory has been observed during past several years. To study the reasons we researched the limiting factors that negatively affect the population of black vultures in Turyanchay National Reserve, one of their main settlements and the neighboring areas. It was revealed that shrinkage of food supply is the main reason for decrease in reproductive and demographic indicators of this species. By considering this we organized supplementary feeding for black vultures in the nature. This activity resulted in elimination of emigration, the number of individuals increased by 32% and breeding pairs by 58,4%. Breeding success rate of the population increased from 0,29% to 0,48%.