Black australorp - feather patches

[lllllllElllllll]

Hey y'all! My black australorp has bare patches in her feathers and it's not improving. Been like this for a while, so figured I'd see if y'all knew what it might be. She's happy as can be and none of the other chickens have the same issue. Any suggestions are welcome. Thanks!

 

[Hillbilly Hen]

It could be she's the favorite girl for your rooster

 

[lllllllElllllll]

That’s what a friend suggested, but we’ve killed off the rooster around 3 months ago and there’s been no improvement.

 

[Hillbilly Hen]

It might take some time.