Die Schädlingsvertilgung einiger Singvogelarten in einem Schwarzkiefern-Zedern-Wald in Beytepe bei Ankara, Türkei

In the year 2002, in Beytepe, near Ankara, the food spectrum of Great Tit (Parus major), House Sparrow (Passer domesticus) and Starling (Sturnus vulgaris) was determined, using the ‘neck-ringing’ method. The food analysis of the bird species mentioned above proved their importance in biological control methods for destruction of organisms harmful for the forest. The proportion of injurious insects in the food spectrum of the bird species investigated is as follows: Starling 60,6 % (n = 20), House Sparrow 56,4 (n = 22) and Great Tit 78,8 % (n = 41).