I have two roosters in separate pens but the pens are just seperated by a dividing fence. Since this fence has been up (they used to free range together) I have noticed that my roosters will run to the fence if the other one is there, and they both start madly eating the grass and do the chiro to call all of their hens over, after about a minute of eating grass they both walk away as if nothing happened. Is this normal? Are they challenging each other? They've never shown aggression twords each other and they've been together for almost a year, they used to snuggle before I seperated them, just wanted seperate breeding pens.