Are budgerigars harmful to humans indoors?

Keeping a budgerigar indoors can be somewhat harmful to humans. First, the bird often flaps its wings, sending dust, bacteria, and fine feathers into the air that enter the respiratory system.

Second, its droppings breed bacteria and may carry parasites. Also, its loud calls disturb the owner’s rest. Finally, budgies can carry psittacosis and other zoonotic diseases, seriously affecting human health.