flava variations -25 August 2012


Since the 20 August there have been intermittently good numbers of flava wagtails at Grafham Water. The percentage of juveniles in these groups has been high and the variety of juvenile plumages impressive. 

This morning there were at least 110 at the eastern end of the reservoir alone. 

(none of these birds had the raspier type calls of eastern flava races the calls were typical of flavissima and the buirds were assumed to have been of the races flavissima or quite possibly flava).  




flavissmia at the paler brownish end of the plumage tone range



three birds showing the range of slightly greyer plumage tones
the right hand bird is within typical flavissima plumage range,
the middle bird is intermediate, and left bird is greyer, cleaner
 above with limited yellowish tones on underparts, a
more striking fringing on the coverts and tertials and a more prominent supercilium


a strikingly pale greyish bird, one of two seen on 20 August, the other had a
slight lemon wash on the undertail coverts and more contrasting upperparts 


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