Speckled Sussex or blue laces red wyondette?
That's not a Speckled Sussex chick. They are chipmunk chicks that look very closely like a chipmunk Welsummer, with dark head triangle, stripe down back, eyeliner.
I can't tell whether it is a blue-laced, time will tell, but you can look at the comb to see if it is single or rose.
A Wyandotte should have a rose comb. A rose comb looks like a little horseshoe indent on the face of the chick with the luck running down the beak.
A single comb looks like a small picket fence going down the face to the beak.
My guess is you may have a BLRW as down color indicates it could be possible, but to know for sure, you'll need to see adult feathering.
But you definitely do not have a Speckled Sussex....and I'm trying to take into consideration some juvenile feathering that has started which might have hidden the original chipmunk pattern, so I'll link a photo to compare with early down.
Here's a photo of a Speckled Sussex chick from Feathersite (scroll down to the Speckled variety chick)
and link for BLRW
Edited by Lady of McCamley - 12/20/16 at 9:47pm