Wednesday, 11 September 2019

Pied wheatear upgraded to Eastern black-eared, Fluke Hall


I called in at Fluke Hall near Pilling last Tuesday (3rd) with Ray for a look at the female wheatear which had been present for a few days. It was initially identified as an eastern black-eared wheatear which would be a new UK tick for me, but was then re-identified as a pied wheatear, apparently due to the pale fringes to the mantle feathers. Then somebody mentioned that they hybridise freely in eastern Europe where their ranges overlap so that threw another spanner in the works. A sample of it's DNA was collected in the form of a faeces and was sent away for analysis, but it turns out that faeces have only a limited value for extracting DNA and the species are so similar anyway that DNA might not be conclusive, plus the hybrid potential makes it even more difficult. Confused, yep well me too.

However after being present and showing well at point blank range for 10 days allowing loads of excellent photos to be taken, it turns out that after all of the confusion it can actually be identified from a photograph, though unsurprisingly not one of mine. There are photos on the web which show that some of its mantle feathers have a white base which apparently proves that it is eastern black-eared because pied never shows this feature.

Great news for me, it brings my UK total to 432 and means that I had a UK tick on three consecutive days last week, western Bonelli's warbler (Lands End), brown booby (Lizard) and eastern black-eared wheatear (Fluke Hall), though none of these birds were full lifers.

Exactly how the white base to the mantle feathers rules out a hybrid especially since the bird apparently has other features which suggest pied wheatear (e.g. remember the pale fringes to mantle feathers??) is way beyond me, but perhaps I shouldn't worry about that. Now we just have to see if the wise people at the BBRC accept the record.




You can see the pale fringes to the mantle feathers even on my photos, but are they relevant? No idea.



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