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It is currently Sun Apr 28, 2024 10:33 pm
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Bjornlefevre
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Post subject: Re: Hello from a 'tiel mommy Posted: Fri Jul 31, 2015 3:53 am |
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Name: Bob
Posts: 747 Joined: May 2015 Location: West-Vlaanderen Belgium Gave happy chirps:
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Got happy chirps: 52 times
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tielfan wrote: All of my lutino babies to date have been girls, whether they're whiteface or regular yellow lutinos. Lutino is a sex-linked recessive mutation, with complicated inheritance rules. I have an article explaining it here: http://www.littlefeatheredbuddies.com/i ... inked.html This stuff makes everybody's head spin the first time they read it lol. ... Sexing made easy. He obviously has the pearl gene too but Teela isn't pearl, so I'll get pearl girls but not pearl boys from them. (removed some of the quote since it was a long post) I thought I started to get the basics, but even after reading yout post above my head started spinning again... I really have to concentrate not to lose track of what mixed with what becomes this or that. Thank God for the geneticswizard in you tielfan !!
_________________ Want to read about Guild Ball? Go to my blog! https://bobplaysguildball.blogspot.be/ https://beekeepingwithbob.blogspot.be/
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tielfan
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Post subject: Re: Hello from a 'tiel mommy Posted: Fri Jul 31, 2015 5:30 am |
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Name: Carolyn
Posts: 7986 Joined: Jun 2008 Location: Arizona Gave happy chirps:
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I got into mutation genetics because Buster and Shodu gave me a couple of lutino chicks in their first clutch and I wanted to understand how that could happen. That's just the tip of the iceberg too, the subject of color genetics is insanely complicated lol.
Getting back to some other topics that were raised... Bird coloration is a lot more complicated than mammal coloration. Mammals have one pigment - melanin - so that's all you have to remove to get an albino. Birds have melanin too but many birds also have a separate red/yellow pigment and many have structural color. This is why birds can be so much more colorful than mammals, they've got a lot more to work with. Most bird species including canaries and finches get their red/yellow coloring from carotenoid pigment in the diet, but parrots manufacture a unique pigment called psittacofulvin (aka psittacin) that's found nowhere else in nature. There are a few other bird families that make a special yellow/red pigment, for example penguins have their own unique pigment.
Blue, green and purple are usually produced by structural coloring which is basically an optical illusion. There are no known blue pigments in birds, and the only known green pigment is in touracos. With structural color, light enters the feather and bounces off the melanin in the feather core, but it passes through a special layer in the feather that alters the way the light reflects and makes it look like blue. If there is yellow pigment in the feather the combination of blue and yellow will look like green, and if there is red pigment in the feather it will look like purple. You need the melanin layer in the feather core to get this effect, and the structural layer basically doesn't function in a mutation that eliminates the melanin. A feather with no pigment in it will simply look white whether it has the structural layer or not.
The cockatoo family (including cockatiels) doesn't have structural color, and neither do African greys. But as far as I know all the other parrot species do have structural color, and that's why we see so many green, blue and purple colors in parrots. Iridescence is a special kind of structural color. I don't know of any iridescent parrots, but several other bird families have it.
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JessiMuse
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Post subject: Re: Hello from a 'tiel mommy Posted: Fri Jul 31, 2015 8:55 pm |
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Name: Jessi
Posts: 1230 Joined: Jul 2015 Location: Tucson Gave happy chirps:
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Awww how cute! I saved just about every one that Lucy was in, to my laptop. I might have to make a slideshow or collage. Though how could you tell who was who when they were newborn? I can't seem to tell Lucy and "Chester" apart in the earlier pictures, until the feathers actually start to develop. I have a feeling she might be on the left in most of them, though. Also, I love how in the fledgling picture, Lucy had her back turned and her bum showing. I can recognize those tail feathers.
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