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Vol. 64 No. 2 (1987)

Published: 1987-07-01

Research articles

Habitat and territory overlap of breeding passerines in the mosaic environment of small islands in the Baltic

Y. Haila, I. K. Hanski

37–49
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Breeding nomadism and site tenacity in the Brambling Fringilla montifringilla

Å. Lindström

50–56
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Diet and breeding performance of Ural Owls Strix uralensis under fluctuating food conditions

E. Korpimäki, S. Sulkava

57–66
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Reversed latitudinal gradients in total density and species richness of birds breeding on Finnish mires

O. Järvinen, J. Kouki, U. Häyrinen

67–73
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Brief report

On the efficiency of censusing waterbirds by boat

M. Haldin, J. Ulfvens

74–75
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Annual variation in the efficiency of adult Herring Gull Larus argentatus counts

M. Kilpi

76–77
- pdf

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