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Common Coot Fulica atra atra   - Colour aberrant individual
Common Coot
Photographer : © Kulbhushansingh Suryawanshi
Location :Junona Lake, Buldhana District, Maharashtra, India
Date : 23 August 2015
English synonyms:Coot, Black Coot, Eurasian Coot, European Coot
Bird Family :Rallidae - Rails, Crakes, Bush Hens, Watercock, Gallinules, Swamphens, Moorhens & Coots
Bird Group :GRUIFORMES
Red Data Status :Least Concern
Remarks :With normal coloured individuals.

Hein van Grouw comments:
A nice example of progressive greying.
Refs:
Grouw, Hein van (2006) Not every white bird is an albino: sense and nonsense about colour aberrations in birds. Dutch Birding 28: 79–89.
Grouw, Hein van (2013) What colour is that bird? The causes and recognition of common colour aberrations in birds. British Birds 106: 17-29.