Martin Stervander, , , Arne Andersson, Timing of Spring Migration in Birds: Long-Term Trends, North Atlantic Oscillation and the Significance of Different Migration Routes, Journal of Avian Biology, ...

The timing of arrival of 81 migratory species in response to the North Atlantic Oscillation (NAO) was studied at two Finnish bird observatories (1970-99). Timing was determined for the first migrants ...