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 Ruddy Shelduck  Tadorna ferruginea


 

  Sonogram of Ruddy Shelduck calls in flight

Potamia Reservoir, Lesvos, Greece  39 13' 16.3" N  26 10' 12.2" W  17 May 2017

Calls from a pair of birds circling overhead. Two types of calls in this recording: low frequency nasal growls (in green) and higher frequency honks (in blue).

[File name: ruddyshelduck114384e]

    Ruddy Shelduck

     


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   Fraser Simpson    www.fssbirding.org.uk