Every year a large group arrives here in Amsterdam around Januari / Februari. Normally they stay only 1 or 2 days, because of the cold the stayed for at least 4 weeks. You can clearly hear why it's also referred to as the "whistling" duck. At one point you can hear the sound of a mallard.
Including Bismarck Archipelago and Bougainville
All of the 943 species known to occur are covered, including the extraordinarily high total of 456 endemics, as well as 5 introduced species, 2 species yet to be formally described and a separate appendix with 75 vagrants. Subspecies are listed also to give a comprehensive overview of the remarkable regional avifauna.
CitationSoNaR, IBC1121165. Accessible at hbw.com/ibc/1121165.
SoNaR, IBC1121165. Sound recording of Eurasian Wigeon Mareca penelope at Sloterplas, Netherlands. Accessible at hbw.com/ibc/1121165.
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