Claude might have cuckoo marans in him to get the barring and white legs, but absolutly mixed. Roxie looks like a BR and maybe something partridge color?
Claude I agree looks like a sex-link - I've seen them like that.
when you use a (I think its female) barred rock in a sexlink coupling the roos will come out barred like that
Roxie is beautiful, she looks like she's a mix of leghorn (yellow legs and the underlaying markings) and maybe speckled sussex? or something similar to get that mottling/spangled coloring to her feathers as she doesn't look barred.
Well the BR and EE mix would go along with the potential mixes of the other two birds - Maude may have BR and Sasha may have EE. Since they all came from the same person it would make sense that maybe some of the same birds were all mixed up together...
i didn't read anyone elses guess, but i say brown leghorn (white ear lobes, redish breast, and overall pattern), and a large breed due to her shape and size. i would have said wyandotte, but comb would have been double. probably white rock by the washed out appearance.