Budgerigars have a lot of thigh hair.

Hair loss? Tiger skin takes about 20 days from hatching to long hair, and it will grow completely up and down in a month and a half. About two and a half months, the tail feathers increased and two thick flying feathers grew. About three or four months later, the hair on the top of the head changed, commonly known as wearing a hat, which is a sign of adulthood. A batch of feathers are changed from time to time every year, mostly in summer, and some feathers grow and fall off at ordinary times. If there is no serious malnutrition, pecking and lice harassment, there will be no serious hair loss.