Barred Rock Rooster+Dalaware Hen

[purrson]

I have a Rooster which I Believe is a Plymouth Barred Rock and an almost pure white Dalaware hen with a black color on the tail feathers(however the are no visible black sports on the bird's neck) what are the offspringso called?
[The offspring was what looked like buffs,with the black spots seen in Dalaware hens on the neck(brown buff like hen with black sports on the neck) and one Hen has the barred Rock look but with an additional copper/dark brownish color.]

 

[Gray Farms]

Offspring would be crossbreds, hybrids, mixes, mutts. Whatever term you prefer.

 

[purrson]

Has these two ever been bred before, if so what was the purpose of the offspring produced? @Gray Farms thank you for the input 'twas helpful.

 

[JacinLarkwell]

I'm sure they've happened in barnyard mixes. They can't make sexlink offspring, so any purposeful breedi bff might have been to try and help a trait in one breed that the other covered really well

 

[purrson]

These are the offspring from the two mentioned breeds.