chickens losing feathers

[Mickm72]

Hi
Can anyone please advise me i have 10 chickens and i have just noticed today that 2 of them have lost a lot of feathers from their necks they have really quite large bald patches the chickens are not pecking at each other does any one know what the problem might be and what i can do about it.
They are all feeding and drinking well ?????:|

 

[SeaChick]

Are they molting?

 

[skatcatla]

Could they be molting?

 

[Mickm72]

yes i think they may just be molting i have now done some looking up on molting on the internet as these are my first chickens i was a bit worried i did not expect them to have big bare patches when molting i thought that they would just lose a few feathers here and there.