Thanks for your reply JedJackson
It's come from a Plymouth Rock hen and rooster but last years chicks hatched from same hen and rooster were Plymouth Rock and Australorp.
This one doesn't look like either.
It's approx 2 to 3 days old
Where to start...
I checked on hen that had been nesting in total lock down and she was off the nest with two chickens. Due to predators I have to remove chicks from hen which I have successfully done previously with another hen and raise the chicks with a hot water bottle. This hen didn't...