what breed?

[KinderChicksMom]

I have been trying to figure out what I have here. Hatched from a brown egg in an assortment from McMurray.

 

[ChickTucson]

I can't be sure, but she looks a bit like my friend's Leghorn pullets.

 

[PotterWatch]

If it is an egg that came from their heavy breed assortment, I would guess that it is a white giant though it could be an orpington.

 

[KinderChicksMom]

I am also thinking Orpington or white giant. As a chick it had a yellowish back and gray wings. I looked at pictures of chicks from both breeds and I'm leaning closer to the Orpington. I have another one who looks just like it but with a slightly lighter comb.