Explain "Overbreeding" To Me

[Chicken6000]

My rooster and hen have been mating recently, I wouldn't say Its a lot and I wouldn't say its too little, I know for a fact that they mate like bunnies! She ended up laying her first egg today! I just want to know If overbreeding Is a possibility in my flock! He Is gentle as can be, no extra pecking to her neck, no harsh gashes to her back or vent. I'm wondering what exactly overbreeding Is, Is it negative mate outcomes? Too much breeding?

 

[sourland]

Overbreeding generally results in feather breakage/loss and occasionally to gashes on a hen's side just anterior to her legs.

 

[JacinLarkwell]

Most consider overbreeding to be when a hen either runs away from the rooster constantly, or when she is bald on her back or has wounds from the male mounting her. This can occur in a pair of birds or in a flock of 20+ hens and one boy