As you know, there are a lot of systematic differences between Buteo buteo individuals. Most differences are consequence of species biotop and climate conditions. A lot of individuals of mentioned species live in Balkan Peninsula, but there is less data about them. The data about birds biodiversity in Bosnia and Herzegovina are very old and first and last completly analyze was perform for the Austro-Hungarian period. May be it is time for new study of predator birds in Bosnia and Herzegovina.