Greater Scaup: Ageing females

For the past week or so now the Wirral peninsular (Cheshire, Britain) has been experiencing an influx of Greater Scaup (Aythya marila), which has included a flock of seven on the marine lake at West Kirby. The flock, which consists of four drakes and three females have been showing well to say the least, enabling those who've made the visit all that worth while with the flock coming down to know more than a meter at times. 

adult drake Greater Scaup (Aythya marila)

1st winter female Greater Scaup (Aythya marila)
The experience also gave the rare opportunity to enable this comparison shot (below) of a 1st winter female and adult female Greater Scaup side-by-side.

1st winter female:
  • Iris - Amber.
  • White front - Small and tatty.
Adult female:
  • Iris - Yellow
  • White front - Board and tidy. 
1st winter female (left) and adult female (right) - Greater Scaup (Aythya marila)


  1. There used to be a big wintering flock on the Dee. Up to 250 in the deepwater channel off Caldy Steps c.1981....quickly declined to zero....


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