Olympus UK E-System User Group
Olympus UK E-System User Group

Join our unique resource for Olympus Four Thirds E-System DSLR and Pen and OM-D Micro Four Thirds photographers. Show your images via our free e-group photo gallery. Please read the e-group.uk.net forum terms and conditions before posting for the first time. Above all, welcome!


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Foto Fair Post your photos for friendly, non-critical feedback. This is the place to show pictures if you aren't yet ready for full-blooded critique, or simply want to share an interesting picture with other e-group visitors.

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  #1  
Old 20th January 2017
iso iso is offline
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Spotty Blackbird

I remember seeing similar years ago. Any Birder like to make a comment?
TRYING to upload PicP1200059.jpg

Last edited by iso; 20th January 2017 at 03:36 PM. Reason: TRYING to upload Pic
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  #2  
Old 20th January 2017
Olybirder Olybirder is offline
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Re: Spotty Blackbird

That is a leucistic bird. A genetic abnomality leads to a lack of melanin pigment in the plumage, causing it to go white to varying degrees. Some birds end up completely white, which is bad news as they stand out and can quickly become prey for Sparrowhawks etc. It is similar to albinism, but the birds have normal looking eyes, rather than pink.

Ron
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Old 20th January 2017
iso iso is offline
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Re: Spotty Blackbird

Thank you Ron. Many of them about??
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Old 20th January 2017
Walti Walti is offline
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Re: Spotty Blackbird

We have a female here with a white tail feather...
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Old 20th January 2017
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Re: Spotty Blackbird

I had one in the garden a couple of years ago.

Nice to be able to see and identify him..

Mj
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Old 20th January 2017
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Re: Spotty Blackbird

It's partially leucistic lacking dark pigmentation in patches. Not uncommon in Blackbirds for some reason. I don't recall ever seeing any other members of the Thrush family with it.
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Old 21st January 2017
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Re: Spotty Blackbird

Very interesting genetic abnormality, indeed not only confined to birds but also humans.

As drmark may verify, in humans it is called viti ligo due to interracial beeding.
My brother and I have white pigmentation patches on top, sides and back of our head due to our Chinese / Irish heritage.
It appeared only a few years ago. If it spreads I may become entirely white ...
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Old 22nd January 2017
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Re: Spotty Blackbird

Leucistic Jackdaw - Symington - South Lanarkshire by Elmer Duck, on Flickr

Here is a leucistic Jackdaw one of two we reported to the BTO abnormal Plumage Survey a few years back. As this bird was easily identifiable, we were able follow it and its mate as they successfully reared one chick. We were surprised and moved by the care and attention lavished on the young bird by the parents. Of the two, this bird was particularly aggressive towards any other birds which came close to the chick. The motto seemed to be attack first, ask questions later. I should say both this bird's mate and the chick had normal plumage.
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