The research methods of the British Trust for Ornithology

Author(s): Campbell, B.

Editors(s): Bergman, G., Donner, K.O. & von Haartman, L.

Published: January 1960

BirdTrack migration blog – early spring

It may still feel like winter but for some species, the increasing temperatures and lengthening days have already kick-started spring migration, with birds starting to arrive and depart across Britain and Ireland.

Tagged Lesser Black-backed Gull. Gary Clewley

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The research methods of the British Trust for Ornithology

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