I have some new layers, and I'm having trouble figuring out exactly who is gracing the nest box... specifically I'd like to know who's laying that lovely dark egg! I haven't caught any of the new layers doing their thing, so I'm pretty stumped.
From L-R: Easter Egger, Salmon Faverolle, Barred Rock and then the mystery egg.
Breeds to choose from: Partridge Cochin, White Rock, Barred Rock, Speckled Sussex or Columbian Wyandotte. (There's also two Polish and a Sultan, but I know those eggs will be white.)
Thanks for your help!

From L-R: Easter Egger, Salmon Faverolle, Barred Rock and then the mystery egg.
Breeds to choose from: Partridge Cochin, White Rock, Barred Rock, Speckled Sussex or Columbian Wyandotte. (There's also two Polish and a Sultan, but I know those eggs will be white.)
Thanks for your help!