Toe pecking
Videos
Toe pecking, an abnormal behaviour of birds in captivity, occurs when one bird pecks the toes of another using its beak. This behaviour has been reported in hens and ostriches. Studies have shown that
Chickens kept in captivity are more likely to engage in abnormal behaviours such as toe pecking.
Feather pecking
Videos
Feather pecking is a behavior that occurs most frequently amongst domestic hens reared for egg production, although it does occur in other poultry such as pheasants, turkeys, ducks, broiler chickens a
Feather pecking amongst laying hens. In the lower right of the picture, the white hen has lost her tail feathers and the brown hen has been feather pecked on the thigh and wing.
Blinders for poultry - From the U.S. Patent "Device to prevent picking in poultry" filed in 1935