Mute Swan colour-marking projects

YELLOW NECKCOLLARS (AK00-AK99, AP00-AP99, AY00-AY99, 00CP-99CP): Volker Blüml, Biologische Station Haseniederung, Kl. Wittefelderort 51, 49597 Rieste, Germany (e-mail: biol.stat.hasen@t-online.de).

YELLOW NECKCOLLARS (FA01-FA74, FC01-FC50, FM00-FM99, FP00-FP99, JE61-JE65, JE97-JE00, JP00-JP99, JT00-JT99, JU00-JU99): Andrzej Czapulak, Department of Avian Ecology, Wroclaw University, Sienkiewicza 21, 50-335 Wroclaw, Poland (e-mail: czapula@culex.biol.uni.wroc.pl ).

YELLOW NECKCOLLARS (PC00-PC99, PE00-PE99, PH00-PH99, PJ00-PJ99, PK00-PK99): Zwanenwerkgroep Avifauna Groningen, p/a Jeroen Nienhuis, Helper Oostsingel 50, NL-9722 AW Groningen, Netherlands (e-mail: jnienhuis@prvgron.nl ).