What can I expect from this mix?

[RWise]

I picked up a pair of GEMs (Green Egg Machines), they are cream isbar over white leghorn. The cream isbar has barring, I want to cross these with my EEs which of course have the ameraucana.
My old guy is from a bantam silkie frizzle and a blue ameraucana, both show birds. I am using his son which is from a BA/EE (75/25 as I was told), she looks BA. He is a very nice guy, large and solid black, shinny in the sun, greens and purples.
Now the isbar is auto sexing, and in the last hatch I had a male BSL, could this have came from this mix?
What can I expect from this mix?
I did get several white chicks,,,

 

[Sneebsey]

With parentage this mixed, it will be difficult to identify what the offspring will look like in terms of plumage patterns. Remember that the EE aren't pure-breed themselves, and many pattern genes and e-series can 'hide' under other genes.

I'm uncertain of which birds are male and female in your post, however if the 'GEM' mix is a cockerel, there will be no sex-linkage from him. Isbar are not autosexing, and even if they were, when crossed to another breed that would not apply; I am assuming he only has one copy of the barring gene, though Isbar shouldn't have any at all, I believe. If it is a hen, and she possesses barring, she would create black sex-links when crossed to an unbarred male. You can only be certain that your 'male BSL' is a BSL if there is no barred cockerel running with the hens.

Pictures would be appreciated, and we can try and identify some of the genes your birds possess.

 

[RWise]

I went back and did my research again,,,
The GEM hens are Cream Legbar (not Isbar, my bad) over White Leghorn, they come out white with black flecks here and there. These birds come from okie critters.
The Rooster I am using is from;
Dad, is a cross of these 2, a Bantam Silkie Frizzle, said to be full blood show stock over a Blue Ameraucana, said to be full blood show stock. Here is his pic;

His mother is Black Austrolorp with some EE, (said to be 75/25), she looks BA, and he is solid black
So far all the white ones look female,

 

[Sneebsey]

With the GEM hens, you'll find some issues, as around half the chicks will have dominant white, therefore you won't be able to tell whether they have a head-spot or not. Those ones will not be sex-links, but the other half will be black sex links, yes.

The cockerel is silver, but impure for it (the cream feathers in the hackle and saddle point to hidden gold). He appears to be Colombian restricted on either a partridge or wildtype e-series.

His son, therefore, crossed with your GEM hens, will produce quite a mix of offspring. There will be black ones, likely with silver or gold leakage in the cockerels, however half will be wildtype/partridge. The birds will be sex-links as he is unbarred, however the headspots may be difficult to see on some birds.

ETA: White is not a sex-linked gene, so if it does turn out that all your white ones are pullets, it's just chance, I'm afraid.

 

[RWise]

I did get black chicks, and some really pretty cockerel from them. The 1 BSL is barred and pretty in his own way,,,
Thanx