Bumblefoot is an infection that affects a chickens foot pad and is caused by the staphylococcus aureus bacteria. It can occur in one foot or both feet at the same time and is characterized by swelling, redness, and often a black or brown scab on the bottom of the foot. Bumblefoot can be caused by an injury to the foot, such as a cut, scratch, graze, puncture, or even a bruise, that then becomes infected. Chickens with bumblefoot may exhibit limping and lameness. If left untreated, serious cases of bumblefoot can be fatal as the infection can spread to other tissues and bones.

Treatment for bumblefoot involves cleaning the wound, applying appropriate medications like triple antibiotic ointment, and dressing the wound in vet wrap. Soaking the foot in warm water mixed with Epsom salt or chamomile tea can also help. In some cases, surgery may be necessary and should only be performed by a veterinarian. Preventing bumblefoot involves proper bedding, a clean coop, monthly checks, and a healthy diet. Chickens should also be provided with softer ground footing and natural foraging activity to prevent accumulation of mud and feces.