Dark poult, black body, with yellow mask

[Dogfish]

What is it?

I have one hen that is a mix with a Narragansett and something. She is darker than my true Narragansetts. Looks like one of her eggs hatched. Just trying to decode what it is, what the other mix parent was. Looks like only one of the 3 blue slates hatched. Was hoping for more.

 

[Jmiller429]

black spanish.

blue slates can throw slate, self blue, and black.