Beak deformity in Starling - Chester

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Beak deformity in Starling - Chester

Postby fletcher on Fri Dec 10, 2010 11:37 am

Hello all, I have had this image sent to me this morning of a starling with an elongated upper mandible. I have to be honest I've not seen this before.

I guess this will cause a major issue for the bird when it is trying to feed? Although, having said that, it can't be that bad as it looks like a fair amount of "over growth" that must have taken some time to accumulate.

Can I ask, does anyone know how common this deformity is? Are there any environmental factors that exacerbate the problem and is there anything the sender can do to help this particular bird?


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Re: Beak deformity in Starling - Chester

Postby PaulMartinHill on Fri Dec 10, 2010 3:00 pm

This phenomenon is not common and most birds manage to survive OK, adapting to feed sideways. I had a similar Starling for the last two or three winters at our feeders at home (Allostock) and the bird was occasionally seen in the Summer, but I haven't noticed it this winter. Blue Tits have also been recorded with deformed bills, with the upper and lower mandibles crossing over, rather like a Crossbill.

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