Vol. 53 No. 1 (1976)

Research articles

• The relationship between census results and the breeding population of birds in subalpine birch forests

  A. Enemar, S. G. Höjman, P. Klaesson, L. Nilsson

  1–8

  • pdf

• Age determination of Willow and Crested Tits Parus montanus and P. cristatus

  M. Laaksonen, E. Lehikoinen

  9–14

  • pdf

• Resource division among birds in North Finnish coniferous forest in autumn

  S. G. Nilsson, T. Alerstam

  15–27

  • pdf