What are the possible breeds of these chick?

[ChickyChickyChick]

I hatched some chicks a few days ago, my lavender orpington rooster was in with one lavender orpington hen, two buff orpington hens, and six ISA brown hens. Out of 24 eggs I got 12 to hatch with three dying and one having to be put down..... Anyways what could the mother of these chicks be? And any guesses on the genders?

 

[ChickyChickyChick]

The chick that is away from the others in the first photo is the one that had to be put down.... when it hatched it had a huge knot or swelling on its neck and couldn't move and therefore couldn't eat or drink. We tried to save it by giving vitamins mixed in water given by a small syringe but it just didn't thrive well.

 

[sylviethecochin]

White one is from the buff Orpington hen.

No. ISAs carry dominant white. Lavender Orpingtons are black with recessive modifiers. Dominant White + solid black background = white chick with speckles.

 

[sylviethecochin]

The paler ones are probably buff crosses. The darker ones are probably ISA crosses (the ones that didn't inherit Dominant white). Lavender*Lavender should get Lavender chicks. I see no lavender chicks, so I'm guessing she didn't reproduce.

Your ISA crosses should, if I'm right, look much like black sexlinks; ie, red throats and shoulders, especially in the males. Your buffxblack (technically buffxlavender, but lav's recessive, so it's a moot point) crosses are going to be a little more interesting. I advise a google search since I currently cannot load pictures.

 

[Crazy for Chickens!]

The dark ones are most likely from the Red Sex Link hens. The lighter ones are from the Orps.

For the gender, post pics of the combs at 6 weeks.