No. He doesn’t have penciling- that’s a female-specific coloration. He either has leakage or lacing.
As for passing it to his offspring, I couldn’t say. He might or he might not. If you really like that pattern, I would breed him to a hen with lacing. Even if what he has isn’t lacing, one laced...
The partridge I’m talking about is the penciled type, not duckwing (welsummers are gold duckwing). Depending on what they’re bred to, penciling shows up in different amounts.
I see no sign that it it. Lacing is present in many breeds, and I have even seen it in Easter eggers from hatcheries (which are almost always EE x EE crosses). Also, not everything that appears to be lacing is actually lacing. It could be leakage or the result of the partridge gene, causing a...
He’s an Easter egger, most likely the result of an Easter egger x Easter egger cross. He does not appear to be sex-linked or have any wyandotte in him.
Chicken breeds were all mixed at some point. I’m not sure how the recessive traits hang on for so long, but it is not unheard of. Keep in mind that new varieties usually require other breeds to be mixed in, adding a bunch of new recessive traits.
Ameraucana mixes can lay green eggs. It’s the...
Poorly bred or hatchery ameraucanas (the actual ones, not the mislabeled “americana” ones) can have one copy of the single comb gene, so it isn’t impossible to get single comb offspring.