Migratory birds under threat.
Institute of Avian Research, Wilhelmshaven, Germany. franz.bairlein@ifv-vogelwarte.de.
Franz
F
Bairlein
D017954:Africa South of the Sahara; D025041:Animal Migration; D000818:Animals; D001717:Birds; D057231:Climate Change; D003247:Conservation of Natural Resources; D017753:Ecosystem; D005060:Europe