Sick rooster and hen

[Gracekelly76]

In my flock I noticed a hen and rooster are puffed up, their tails facing down, a gurgling nose when they breathe and the roosters comb is getting darker

And the rooster has like a caramel poop colour

What could this be?
Will post pics soon

 

[Chickensandhorsesforlife]

Coccidia? I am not sure. pics would be very heplful