I’ve lost 4 chickens and two of the four were buried. The first was the Cornish cross pullet that I rescued from slaughter who passed away at 9 months of age while I was on my graduation trip and my father buried her for me. The second chicken that was buried was the only silkie pullet that lived longer than her siblings who died less than a week after I got them and I wasn’t really attached to those 2 so they went in the garbage. Most of my pets have been buried whether it was a special pet fish, a hamster, parakeets, guinea pigs, or chicken.