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Vol. 67 No. 2 (1990)

Published: 1990-07-01

Research articles

Population increase and breeding biology of the Dunnock Prunella modularis in southern Finland

J. Tuomenpuro

33–44
- pdf
Seasonal changes in diet of Hawk Owls Surnia ulula: importance of snow cover

J. O. Nybo, G. A. Sonerud

45–51
- pdf
Breeding habitat distribution in a population of the Herring Gull Larus argentatus on the Finnish west coast

J. Ulfvens

56–59
- pdf

Brief report

Phenotypes of juvenile offspring of a mixed pair consisting of a male House sparrow and a female Tree Sparrow Passer spp.

P. J. Cordero

52–56
- pdf

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