Egg producer accused of animal cruelty LANCASTER COUNTY, Pa., April 12 (UPI) -- An animal rights group said Thursday an investigation has uncovered animal abuse and unsanitary conditions at a Pennsylvania egg supplier. In a statement, the Humane Society of the United States said its examination of the Lancaster County, Pa., Kreider Farms uncovered "injured and dead hens, including mummified bird carcasses" in cages with chickens who lay eggs for human consumption. Undercover video allegedly taken at Kreider Farms and provided to ABC News appears to show dead birds among live ones in crowded cages. Kreider Farms is Pennsylvania's largest egg producer and holds 5 million chickens, its Web site states. Although the company did not comment on the investigation or the video, Kreider Farms' President Ron Kreider told the New York Times the report was a "gross distortion." The reality of food processing can be off-putting to those not familiar with animal agriculture. When dealing with millions of birds there is always a small percentage of dead birds," he said.