Mysterious Burrows

[Threewyandottes]

Hello,
This Afternoon, when i went out to grab the eggs, i noticed some burrows. when i followed the burrows i found a huge subterranean junction of burrows under the chickens water. can anyone identify the animal responsible for this and if it is dangerous to the chickens?

 

[centrarchid]

Fossorial mammal.

 

[Grits&Eggs]

not a mole, we have moles, they are raised tunnels then a hole when they pop out....we had rats tunnel under the coop (until we buried a foot of hardware cloth!) could be rats.