one of my chickens is not well plz help

[JennyC]

it is losing featheras but still has the little tube things and they are turning blak! it is happening all over its body i am worried a i have no idea whats going on please help!

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[JennyC]

anyone?

she has just come off the brood and did have mites but after we treated her they were all gone what is happening?

 

[Jena]

Could she be moulting? Which is perfectly natural, they moult regularly.

 

[JennyC]

she could be but half her feathers are gone. she had all of them yesterday so i dunno do they molt that quickly?