Chickens Fighting !!

[produce]

Have 2 Laying Hens Suddenly Fighting With Each Other -up Close And Aggressive-any Ideas?

 

[stormylady]

Could be a dominance issue? Mine fight well have disagreements sometimes but it never lasts very long.
I know when I lost my top hen not to long ago and Marta tried to take over there were alot of knock down drag out in the pen but they have settled down now that it is resolved.