Choosing a healthy budgerigar should be considered comprehensively from many aspects.
The method is as follows
1. The parrot's hair should be clean and shiny.
Feathers should be close to the body, not fluffy.
3. Parrots should keep lively. You can't always close your eyes in one place.
4. Any abnormal behavior, such as closing eyes, loose feathers, dull eyes, lethargy, drooping wings, perianal pollution, diarrhea, etc. They are all morbid, so don't buy them.
Answer two questions.
The average life span of budgerigar is 7 years, but if properly cared for, it will increase to 15-20 years, or even longer.
Answer three questions
Judging the age by the appearance of birds is mainly
The young bird with tiger-striped feathers on its forehead is a sub-adult young bird.
The tiger spots on the forehead disappear, and the nose shows that blue males or pink females are parrots in their golden age.
If the whole body feathers are too bright, the nose is dark blue, male or brown female and the exercise time is reduced, it is likely to be an elderly bird.
Supplement: It is best to keep budgerigars in pairs, because single breeding will make birds feel lonely, bored and prone to depression.
You can add me if you don't understand anything, and I will give you a more comprehensive and specific answer.