My rabbit will cophrophagize on occasion. Actually, fairly regurarly (no pun intended).
All rabbits do that out of necessity.
The pellets you see it eating are not technically feces.
They’re special ‘pellets’ the rabbit produces to maximize digestion of certain nutrients that they cannot obtain, otherwise.
If a rabbit is placed in a pen where all the droppings fall through the screen and it cannot eat these pellets, it will die.
with rabbits its normal. there are some substnces in their feces that they need for digestion...when I had a rabbit, it always pooped in exactly the same spot so had no trouble finding his pile....