More than 1,000 animals, many of them dead, were being removed from a Montclair industrial park Friday after authorities investigating reports of a rotten smell found the creatures in hoarder-like conditions, police said.

“Despite the doors being closed, we could smell an odor of feces and decay. For lack of a better term, a chicken farm smell,” said Montclair police Sgt. John Minook. “This is probably the worst I’ve seen in my career.”