All chicks turned black?

[Boccom]

It was obvious who the mother was on some of them because of floppy combs

 

[BigBlueHen53]

So it sounds like you are saying you expected something different if the white Leghorn bred the Buff Orpington hen, is that right?

 

[BigBlueHen53]

Looks like @NatJ had a good answer.

 

[The Moonshiner]

True white leghorns are dominate white and it's dominate. Dominate white doesn't cover gold/buff/red but it certainly covers black. One copy doesn't do a perfect job so when crossed and offspring only get one copy the offspring are white with black specks here and there.
I wouldn't believe a white leghorn is the father of those barred chicks. It just can't happen because of the dominate white.
Disagree with the other poster. White leghorns do not have black or barred offspring ever.

 

[NatJ]

Was the White Leghorn rooster the only possible father?

 

[The Moonshiner]

From the offspring both parents carried the barring gene. The cockerel has two copies so he had to get one copy from each parent.
I'd suspect your leghorn rooster is actually a white rock rooster. The white rocks I had were recessive white over barred. Recessive white takes two copies to be expressed. If he was a recessive white over barred all his offspring would get a white gene but it wouldn't show so he would breed as a barred.
If that was the case crosses with a barred rock hen the offspring would be exactly what you got.
Breed those offspring together and id bet you'd get around 75% barred offspring and around 25% white offspring.

 

[sourland]

From the offspring both parents carried the barring gene. The cockerel has two copies so he had to get one copy from each parent.
I'd suspect your leghorn rooster is actually a white rock rooster. The white rocks I had were recessive white over barred. Recessive white takes two copies to be expressed. If he was a recessive white over barred all his offspring would get a white gene but it wouldn't show so he would breed as a barred.
If that was the case crosses with a barred rock hen the offspring would be exactly what you got.
Breed those offspring together and id bet you'd get around 75% barred offspring and around 25% white offspring.

The rooster pictured has red earlobes reinforcing that possibility.

 

[nicalandia]

The Rooster may have been a very white California White rooster(one shot of dominant white and Barring hiding under it)

 

[RoostersAreAwesome]

I can also get pics of the children who are now full grown but it will be hard to find a pic of the mom here is the dadView attachment 2109497

I agree with other posters, this rooster is a white rock, not a leghorn.

 

[nicalandia]

I agree with other posters, this rooster is a white rock, not a leghorn.

Yeah, now that I take a closer look on it, the rooster built is rather heavy and White Rocks are known to carry Barring under the white...