We have Gold, Peck, & Nugget who will be 6 weeks on Monday. Was told they were all pullets, but thinking one may be a roo. This is our first experience with raising backyard chickens. Guessing Gold is a Buff Orpington, Peck (black/white) is a Barred Rock, & I have no clue what Nugget (black & copper/brown) is. Nugget started out being all black & then just last week the coppery color feathering started showing. I know these aren't great photos, but any help would be appreciated!