asbostaff's picture

Jackdaw with white patches

Observed: 15th November 2009 By: asbostaffasbostaff’s reputation in Birdsasbostaff’s reputation in Birdsasbostaff’s reputation in Birds
Leukistic Jackdaw crop
Leukistic Jackdaw crop 1

Jackdaw with white patches on wing and tail feathers.

Species interactions

No interactions present.


AB25426 - abbey's picture


Is this leucism? This usually results is more patchy widespread lack of pigment, but the white looks very defined on this one.

Abbey Burn
OU Student BSc Natural Sciences

devlin's picture


We have lots of these birds with white feathers down 'our' way (Penzance, Cornwall)including Crows and Blackbirds. We have been seeing them for a couple of years now. It will be interesting to know if it is Leucism.


Dave. Student FDa Conservation and Countryside Management.

bobthebirder's picture

leucistic crows

See for lots more on leucistic crows...

Bob Ford

the naturalist man's picture

leucistic birds

As Bob says visit the above observation for a discussion on leucism. However, just to recap. Albinism is caused by faulty genes and affects the whole animal. Leucism is caused by many different factors, some perminant, as in your bird, and some temporary. Also it can affect anything from one feather to the whole animal.

Graham Banwell

Visit the iSpot Yorkshire forum for information on events, issues and news relating to 'God's own country'

er2938's picture


Someone mentioned to me that consumption of bread and other human foods is linked to pigment loss/leucism in blackbirds and carrion crows. Doesn't sound terribly scientific, but would be interested to hear your thoughts.


the naturalist man's picture


I've not heard about such a link, however, it would not surprise me. There is a link between low nutrient intake and pigment loss. Pigmentation costs energy to produce, especially melanin (black pigmentation). As processed foods, especially white bread is low in the nutrients birds require then it is bad for them. Worse still white bread swells in their stomachs and so the bird does not feel hungry even though it has eaten very little. All this leads to a situation where melanin production would be stalled during feather production.

In other words don't feed white bread to birds!

Graham Banwell

Visit the iSpot Yorkshire forum for information on events, issues and news relating to 'God's own country'