Avian Circovirus is a small virus that primarily affects birds, particularly pigeons, chickens, and parrots. It belongs to the family Circoviridae and is known for causing various diseases, including beak and feather disease in parrots. The virus is resistant to many environmental conditions, making it challenging to control. Infected birds may show symptoms such as feather loss, poor growth, and weakened immune systems. Transmission occurs through direct contact with infected birds or contaminated environments. Vaccines are available for some species, but prevention through good hygiene and management practices is crucial for reducing the spread of the virus.