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Kakariki, Care, Breeding, Ecology, and Conservation :: View topic - Clear eyes..?
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Clear eyes..?

 
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Steptoe
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Joined: Oct 06, 2004
Posts: 4508

PostPosted: Tue Jan 12, 2010 6:17 pm    Post subject: Clear eyes..?

Unfortunately in NZ we dont have mutations and althu there are many pics in the gallery and posts, it is hard to get an idea what to look for ....
I have a batch of chicks, 3 females 2 males from a pair of wilds.
They are now 4 months old and should have devaloped their iris long before now.
I cant get a good pic....
The eyes are dark a shiney, and one can just ..sometimes , on vwery close inspection, make out a very thin very dark red/orange iris around the edges of the eye
When they look forward, one can get a 'flash' if look close, of the iris.

Other than the above, they look as if they have no iris.
There are no other signs of mutations, thu the father does have a pale yellow feather on 1 side of the tail...Im not sure if this is a mutation or a 'defect'

The parents are currently hatching another batch of chicks...3 of 7 eggs as of 4 days ago.

Cheers
Steps

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Peter
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Joined: Oct 15, 2004
Posts: 599

PostPosted: Wed Jan 13, 2010 9:33 am    Post subject:

The iris of a recessive pied or black eyed clear can vary from dark brown to black and is proportional with the degree of piedness. Less pied>dark brown, 100% pied>black. Black eyed clears are always more than 80% pied.

Macro photo of a recessive pied eye.

Same bird, with flash


There is evidence that some split birds sometimes display a darker eye. See bird below. It only had one pied toe.


Another possibility is that it is just an eye mutation.
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Steptoe
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PostPosted: Wed Jan 13, 2010 5:06 pm    Post subject:

The small photos...that is what they are like...definately not brown, but black.
But no other sign of pied, not even a pink or white toe amonst any of them.

And on closer inspection the father also has small iris with very black shiney eyes, and that "pale yellow feather on 1 side of the tail...Im not sure if this is a mutation or a 'defect' "

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Peter
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Posts: 599

PostPosted: Thu Jan 14, 2010 8:40 am    Post subject:

Maybe it is just a defect but the fact that it is inheritable makes it intriguing. It would be interesting to pair a daughter back to the father. If there is a hidden mutation then it will come to the surface in it's full expression. Remember that split to split gives a 25% chance of a full expression. So on every 100 birds, 25 will display the mutation. But it doesn't say whether it will be the first or the last 25. Patience is the key word.
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