Outcome of Easter Egger Bantam x Cochin Bantam?

[SwampPrincessChick]

This is a hypothetical question because I am not breeding April and Slate together due to Slate's deformed leg, but what would their chicks look like?

April is an Easter Egger Bantam hen with primarily blue feathers, and she has darker blue tick marks on her plumage like a lot of blue chickens possess. As she grows older, her blue feathers keep turning faded brownish in some spots.

Slate is a Cochin Bantam rooster. He is also primarily blue but he has a lot of leakage in his feathers, especially his hackles, that is a coppery brown color and red. His feet are yellow.

That is it! I know their chicks would have a 50% chance of being blue, 25% splash and 25% black, but what about the other things? Comb? Leg color? How would the leakage play a role?

@NatJ

 

[NatJ]

I know their chicks would have a 50% chance of being blue, 25% splash and 25% black, but what about the other things? Comb? Leg color? How would the leakage play a role?

Comb: half or all of chicks should have pea comb (half if the mother has one pea comb gene, all if the mother has two pea comb genes.)

Leg color: more likely to match the mother (looks like slate/blue with white soles), but chance of matching the father (yellow) and some might be willow/green.

Leakage: probably some chicks with less leakage than either parent, some with more, some matching one parent or the other. The parents could both be pure for E (Extended Black), in which case all chicks will be as well. But if each parent is E/_ (Extended Black and something else), about 25% of chicks will have "something else" and no Extended Black. Depending on what "something else" is involved, the chicks could be wild-type (Duckwing), or Wheaten, or Birchen, or Partridge, or some combination. Such chicks would show various amounts of brown/gold/red/yellow shades, with some black or blue or splash. The black/blue/splash parts would follow the usual pattern of 25% black, 50% blue, 25% splash.

 

[SwampPrincessChick]

Comb: half or all of chicks should have pea comb (half if the mother has one pea comb gene, all if the mother has two pea comb genes.)

Leg color: more likely to match the mother (looks like slate/blue with white soles), but chance of matching the father (yellow) and some might be willow/green.

Leakage: probably some chicks with less leakage than either parent, some with more, some matching one parent or the other. The parents could both be pure for E (Extended Black), in which case all chicks will be as well. But if each parent is E/_ (Extended Black and something else), about 25% of chicks will have "something else" and no Extended Black. Depending on what "something else" is involved, the chicks could be wild-type (Duckwing), or Wheaten, or Birchen, or Partridge, or some combination. Such chicks would show various amounts of brown/gold/red/yellow shades, with some black or blue or splash. The black/blue/splash parts would follow the usual pattern of 25% black, 50% blue, 25% splash.

Thank you for the information! It is very helpful. I can understand comb and leg color genetics but when it comes to the feather color genetics, I get lost because there are so many variables in it.

 

[NatJ]

when it comes to the feather color genetics, I get lost because there are so many variables in it.

Sometimes I get lost too

It does seem to get a bit easier with practice, but I still miss things regularly, or have to go look up stuff I'm sure I have looked up plenty of times before but I still don't remember it all.