1, blackbirds can scream in less than a year, and it only takes five or six months to be fast. If they don't scream for a long time, it may be a female bird. Generally, males and females can be distinguished by observing their appearance, but this method is not absolute.

2, blackbird, also known as the hundred tongues, this kind of bird has a loud cry, which can be regarded as the most screaming bird. It's a bird of the order Ornithidae. Weight 55-126g, body length 210-296mm; The male blackbird is black except for the yellow eyes and beak. Female and newborn blackbirds do not have yellow eyes, but have brown feathers and beaks. The iris is brown, the beak is orange or yellow, and the feet are black.