Blue chick?

[The Prairie]

Hatched eggs this week from my mixed flock. One is a white with red leakage roo that was supposed to be a Salmon Favorelles over a crisp clean white cochin hen from an unknown background. The chick is blue-lavendar colored down. I wasnt expecting this color chick and understand it could end up white as expected but am curious a couple things. 1. Is it white? Are there any things that can distinguish this before feathering?
2. What causes blue down color in white chicks such as White Rocks? I had a WR chick and this is current chick is a completely different shade, I'm assuming partly due to lack of barring but is there more?

 

[sylviethecochin]

White Rocks do tend to have a bit of a smoky tinge. But it's more a tinge--like really light lavender. That chick looks actually blue to me. (also, unless interbred, White rocks do not usually carry barring).

Cochins are usually recessive white. Unless you breed her with a rooster carrying recessive white, none of the chicks will inherit that colour from her. Recessive white shows no leakage.

The rooster, as shown by his leakage, is dominant white. But he's only carrying one copy (we know this because of the leakage, and the fact that he managed to produce a non-white chick). Because he's only carrying one copy of dominant white, and chickens have two copies of every gene (excepting sex-linked) he managed to pass on the non-dominant white copy, which left the chick with ordinary black. He also did not pass on his "showing" (phenotypic is the correct term) colour.

He does, however, have the gene that makes the entire chicken some variant of black (dominant white is a variation of black, as is lavender). And that, he did pass on, since your chick is all a solid black-based colour.

Since your hen's "showing" colour has no effect on the chick, and the rooster's "showing" colour doesn't either, they're passing on the genes you can't see. In this case, one of them must carry a blue dilution gene, which dilutes black to blue.

 

[nicalandia]

One of the parents have the blue dilution gene(Bl/bl+) most likely the white orp since they seem to be recessive white

 

[BabasCoop]

It’s an adorable chick !!! Blue chicks are one of my favorites.

 

[The Prairie]

It would be really cool if it's a blue chick! So neat they are/likely hiding something so unexpected! I lost my blue cochin last year so would be neat to have another blue floofer. I would assume the Cochin is carrying the blue as I can't think where Marolyn the roo would've gotten it. Not sure where he got his Dom White but assume he is normal Salmon Fav color underneath. Thank you for all the clarification guys!

 

[The Prairie]

So it's my understanding that in order for Marilyn to be D white he'd have to have a D white parent? How would a large hatchery end up with a D white bird in pens of Salmon Favs? He is for sure at least part Fav as he has 5 toes on each food, feathered shanks and beard but how would this slip by? Trying to figure out what genes he could be hiding under there.

 

[The Moonshiner]

Sounds odd to me too.
Where you the one that purchased him?
If so I'd be curious which hatchery so I can stay clear of them.

 

[The Prairie]

I purchased him from a feed store sourced by Privett

 

[The Prairie]

It's really odd..he's definitely not built like a Fav but has all the extras. He's one of my favorites so isnt goings anywhere so will be curious to see what else he throws. I have 5 roosters so hard to say of any if the others are his except he's the only bearded. He's also a lower roo so only see him breed this hen and a handful here and there.