If she's a year old and 20 lbs. I'm going to say standard bronze.
But 20 lbs is the top end weight for hens.
I would expect a bbb hen to weigh quite a bit more at a year.
Markings on head lead me towards bronze
But what I can see of back feathers maybe some narragansett.
Need a few more pics.
How old is poult?
Where did you get the turkey?