This was an interesting sighting in my garden as this crow has white outer wings which were very visible during flight which is what drew my attention to it . I assumed it was a degree of Leucism in the bird but someone on another forum I frequent suggested it may be due a calcium deficiency during its last moult.
Carrion Crow ( Corvus corone ) by Steve Dawes, on Flickr
Carrion Crow ( Corvus corone ) by Steve Dawes, on Flickr
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