Splash, Birchen, Black Copper, Marans breeding question

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In the more strict sense of the term, "birchen" is a pattern. A silver birchen hen has a silver head and neck, with a black body. A gold birchen hen has a gold (or red, or rust, or whatever, depending on other modifying genes) head and neck, with a black body. A blue birchen hen has a silver head and neck with a blue body -- and so on. In the less strict sense, though, the word "birchen" is often used as short-hand for "silver birchen". That's one of the reasons why it's easy to get confused when people start throwing the word "birchen" around!

Is black and black copper the same thing? I see "black marans," and, "black copper marans." Are they interchangable, or is it solid black vs black with copper coloring?

Black and black copper are NOT the same. Black is just what is sounds like -- black. Black copper is the same thing as gold birchen, or more specifically mahogany gold birchen.

Sorry for such elementary questions. As you may have guessed, as it is so obvious, I know nothing about genetics. Or colors of chickens apparently! Why is a grey chicken called a "blue?" And lavender, now that confuses me even more. I see a picture of a "lavender orpington," and it looks to me like a grey chicken!

Chicken color genetics are VERY complicated, so don't feel bad about feeling ignorant!

Gray is called "blue" in many places throughout the animal world. Kerry Blue Terriers, Russian Blue Cats, Blue Dobermans, Blue Heelers, Blue Roan, and so on. It's just an accepted name for it.

Lavender is a different type of "blue", with a different genetic basis. Just to make things even more confusing, lavender is also called "self blue".​
 
Aahhh Ha, I think I've got it now! Thank you, amazondoc!
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Now, I will move on to more poultry genetics training!
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I feel so empowered now.
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I can now tell the color of a chicken in chicken language, eerrrr I mean, poultry genetics! Next I will try to learn how they got to be that color! Black + Splash = Blue. Is that ALL the time, or just sometimes? I assume some will be black, some splash, and some blue. ????

I'm gonna get it, really I am....
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In the more strict sense of the term, "birchen" is a pattern.

Birchen (ER) is not really a pattern. It is more fundamental; it is an e-allele. I realise that sounds complicated to many. ER (birchen) like the other e-alleles are better described as base genes, essential genes upon which colours & patterns are made.​
 
OK, can you help me out here? What do I have? I got a dozen Marans, and there is a mixture of types ... I know the lightest colored ones are suppose to be splash marans, right? Well, there are 2 different shades of grey (err, blue), are they birchen or are they ??? I dunno ... I know the black one is black copper marans!

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ETA: another photo:
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The grey ones- no matter what shade- are blue. I have BBS cochins,and the hens tend to be darker in the body than the roos. Don't know if it works the same with marans but seems likely.
 
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Birchen (ER) is not really a pattern. It is more fundamental; it is an e-allele. I realise that sounds complicated to many. ER (birchen) like the other e-alleles are better described as base genes, essential genes upon which colours & patterns are made.

Oh phoo, I know that. We were talking about visually.
 
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Time to get even more confused --

There are at least a couple ways of making a "black" bird. For instance, the bird could have the gene known as "extended black" (E), or it might have the birchen gene (E(R)) along with the melanotic trait.

An extended black bird, crossed with a true splash (which will also be extended black) bird, will produce 100% blue offspring. And if you breed those blue offspring together, they will produce 25% black, 50% blue, and 25% splash offspring more or less.

A melanized birchen bird, crossed with a true (extended black) splash bird, may produce 100% blue offspring as well. BUT -- if you breed THOSE blue offspring together, you will probably end up with a mishmash of black, blue, splash, AND black (regular) birchen, blue birchen, and splash birchen.

Yes, it's complicated!
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