What breed & gender are these 4 week old chicks??

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Okay, thank you everyone, i'd never even heard of Golden Comets before so it's quite exciting! They are beautiful chicks, and i love watching them playing in their brooder. They tried pasta for the first time yesterday, there was much excitement and lots of chasing going on in the brooder

I'll post pics when they're more or less fully grown so you can see how they've matured

Thanks again everyone!