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Résumé :
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Capsule Marked changes were observed in the spring phenology of birds and were more apparent in residents and short-distance migrants than in trans-Mediterranean migrants. Aims To examine changes in first songs and arrivals of birds in northeast Scotland. Methods First song or first observations of 38 species were recorded between 1974 and 2010. Trends through time, and relationships with regional variation in temperature, were both examined. Results There was a strong tendency for first song/first arrival dates to advance, with the average change being an advance of 25 days over the
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