What breed could this chickie be?

[Zannacat]

Hi, I'm new here. I just got 10 (supposed -to-be) pullets from Ideal. 2 barred rock, 2 production reds, 2 Ameracauna, and 4 surprise assorted pullets. Out of the surprises I have 1 Red and 3 Not-Sures. The first is a black chick w/ grey/white undercarriage:

Any ideas? I was thinking Black Sex Link but the females are supposedly totally black from what I read.

Don't know how to post more than 1 pic per post so more to follow!

Thanks for looking.

 

[lurky]

looks like a black australorp to me

 

[Zannacat]

Thanks I'd wanted a black austrolorp since they are supposed to be good layers in the heat! They were supposedly sold out when I ordered. I wonder how that works at the hatchery. Maybe sometimes more hatch than you expect.