Animal welfare officers faced the grisly task of euthanizing more than 350,000 chickens by hand after they were left starving and cannibalizing each other when a South African state-owned poultry company ran out of money to feed them, officials said Tuesday.

The National Council of Societies for the Prevention of Cruelty to Animals, or NSPCA, said it wasn’t able to say for certain how many other chickens had already died by the time its officers reached several neglected poultry farming sites because of the “mass cannibalism” that took place among the birds.

The NSPCA managed to save more than 500,000 chickens, it said.

“It was a harrowing scene,” the NSPCA said in a statement. “Skeletal chickens huddled together, chickens eating one another, feeding lines stripped bare.”

The chickens were owned by Daybreak Foods, a major poultry supplier owned by South Africa’s state asset management company Public Investment Corp.