Vogelnistkastenerfolgskontrolle nach einer Revision 1993

Wien

1997

S. 22-24

7 Lit. Ang.

Unselbständiges Werk

200051837

In a 90ha trial plot with severe damage by the sawfly Pristiphora abietina nesting boxes were installed. In 1993, a revision of the 200 nesting boxes was made to improve the use of the boxes by the birds. The results after two controls in 1994 and 1995 are discussed.