Definition:	Weakening and atrophy of chest muscles with prominent keel bone resembling a sword
Symptoms:	Protruding keel bone Lethargy and inactivity Quick fatigue Loss of appetite Excessive morning sleep Sitting on cage floor (advanced cases)
Causes:	Intestinal inflammation/diseases Respiratory diseases Internal parasites/worms External parasites (e.g., mites) Nutritional deficiencies Lack of sunlight exposure Overcrowded cages Chronic diarrhea Vitamin deficiencies
Treatment:	Isolate in individual cage Daily boiled eggs (1 week) Suspend fruits/vegetables (5-7 days) Offer sprouted seeds Adequate sunlight exposure Vitamin supplements in water