Rare color variation

[Deleted]

Apr 24, 2021 10:14:50 GMT Marianne Marlow said:

Complicated little fellows aren't they. It's Iris that has a patch and also a partially clear flight feather.

She's beautiful. 🥰

[mews]

Apr 24, 2021 0:45:00 GMT Hezz said:

The poster did say he was a yellow face.

I’m sure I’ve read of birds that have the pied patch on the back of the head but no other pied markings, so I went looking and found this:
One last area of identification of Pieds which can be confusing is the bird with only a head spot and no other Pied markings. Again there is no foolproof method except for test mating. which comes from this article:
users.tpg.com.au/users/kyorke/p225.htm

Back 1958-1962 I bred what we called Dutch Pieds which could have just a spot on the head, or spot and colorless flights also.  If that type of pied was combined with harlequin (recessive pied), you got a completely clear bird with dark eyes and recessive pied cere.  The Dutch pieds were also dominant and had normal cere color and eyering eyes.  I discovered the hereditary interaction to enter in the 1962 King County science fair my senior year of high school.