Are European birds migrating earlier?

• URL: https://publications.hereon.de/id/900/
• Authors:Sparks, T.,Heyen, H.,Braslavska, O.,Lehikoinen, E.
• Year:1999
• In: BTO News (British Trust for Ornithology)
• Volume:223
• Pages:8-9
• Type:journal article
• ISSN: 0005-3392
• Cite as: Sparks, T.; Heyen, H.; Braslavska, O.; Lehikoinen, E.: Are European birds migrating earlier?. BTO News (British Trust for Ornithology). 1999. vol. 223, 8-9.

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