Acta Zoologica Cracoviensia, 5() 1960
The diet of the eagle-owl Bubo bubo (L.) in the Pieniny Mts.
Abstract:
INTRODUCTION. The materials discussed in this paper were collected on the occasion of the investigations of the Pieniny avifauna. I was able to collect them thanks to the fact that several pairs of eagle-owls nested in the Pieniny Mts. in a comparatively small area (Ferens, 1953). Such a great density of eagle-owls is probably connected with favourable breeding conditions in this region. In the Pieniny Mts. eagle-owls nest on small lime rocks looking chiefly toward the south and surrounded with woods. The birds did not build nests in any case observed by me, and the eggs, mostly two in number, lay immediately on a rocky ledge or on the ground at the foot of a rock, at the edge of a talus slope. The eggs may also lie on small bony fragments derived from decomposing pellets and mixed with dust.
