Colour after moulting

[FreeBirthMama]

I have 3 Sussex, and after their moult one of them has brownish feathers instead of white. The other 2 came back white though. Does that mean anything? Is it just a fluke or is there some nutrient deficiency? Her black neck band was already faint before her moult, but you can really see the colour difference in the pic of all 3 of them together. She's the second from the bottom on the right.

 

[Kelsie2290]

Interesting, makes you wonder if there was another color of Sussex crossed in at some point, maybe a Buff.

 

[aart]

How old are they?
Is this their first full adult molt or are they this years pullets getting their first set of adult feathers?

 

[FreeBirthMama]

I don't know how old they are, they are second hand chickens. I was led to believe they were this year's chicks, but with half the bunch moulting, I guess not. And they came from a traditional farm, so I can't be sure of their breeding either.

 

[Ridgerunner]

That means she is not a pure Light Sussex. She has some other color mixed in, maybe from a few generations back. It’s not any kind of deficiency.