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Isabel Jorzik, Auteur ; Wolfgang Fiedler, Auteur ; Michael Kaatz, Auteur ; Shay Rotics, Auteur ; Ran Nathan, Auteur ; Martin Wikelski, Auteur ; Andrea Flack, AuteurMigratory divides are junctures where populations of the same species following different migratory routes intersect. In white storks (Ciconia ciconia), migration strategies differ between the western and eastern flyways, yet the factors influen[...]
Article
Sondra Turjeman, Auteur ; Ute Eggers, Auteur ; Shay Rotics, Auteur ; Wolfgang Fiedler, Auteur ; Alejandro Centeno-Cuadros, Auteur ; Michael Kaatz, Auteur ; Damaris Zurell, Auteur ; Florian Jeltsch, Auteur ; Martin Wikelski, Auteur ; Ran Nathan, AuteurReliable estimates of nest-switching are required to study avian mating systems and manage wild populations, yet different estimation methods have rarely been integrated or assessed. Through a literature review and case study, we reveal that thr[...]
Article
Ingolf Todte, Auteur ; Michael Kaatz, Auteur ; Wolfgang Fiedler, AuteurUntil the end of the 20th Century the Great White Egret was a rare vagrant in Germany. Today, it is a regular winter guest with a few birds staying during summer. The origin of these birds is largely unknown. For the first time in Central Europe[...]
Article
Nikita Chernetsov, Auteur ; Michael Kaatz, Auteur ; Ulrich Querner, Auteur ; Peter Berthold, AuteurA White Stork from the Kaliningrad region of Russia was taken into captivity as a nestling in 2000, raised at the Biological Station Rybachy and released after a retention experiment in September. The bird was tagged with a satellite transmitter[...]
Article
Birgit Gerkmann, Auteur ; Michael Kaatz, Auteur ; Klaus Riede, Auteur ; Renate van den Elzen, AuteurAnalyses of satellite telemetry data of White Storks Ciconia ciconia from the eastern populations at their stopover sites and staging areas document the importance of the Luangwa Valley, eastern Zambia, as a migration corridor bridging eastern a[...]
Article
Ulrich Koeppen, Auteur ; Alexander Petrovich Yakovlev, Auteur ; Raimund Barth, Auteur ; Michael Kaatz, Auteur ; Peter Berthold, AuteurThe Kyrgyz population of the bar-headed goose Anser indicus has declined dramatically during the past decades. Human persecution during migration and habitat loss at stopover and wintering sites are commonly regarded as most serious threats. How[...]
