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Common
Pochard
Aythya
ferina
![Sonogram of female Pochard call in flight](Images/pochardLS110890son.jpg)
Walthamstow
Reservoirs, London, England 6
May 2013
Call from a female in flight.
[File
name: pochardLS110890e]
Click here for the MP3 file
![Sonogram of male Pochard display song](Images/pochardLS110891son.jpg)
Walthamstow
Reservoirs, London, England 6
May 2013
Displaying male vocalisation.
[File
name: pochardLS110891ecut]
Click here for the MP3 file
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