When purchasing a Little Yellow Cap Amazon Parrot, you can use the following methods to determine the parrot's appearance and health:
Look at the feathers: Healthy parrot feathers should be neat, smooth, soft and shiny, with no signs of breakage, falling off or discoloration. If your parrot's feathers are unhealthy, it's likely that there's something wrong with its body as well.
Observe actions: A healthy parrot should be lively and active, with high mobility and flying abilities. If your parrot is sluggish, unwilling to fly, or often hiding in corners, it may have a health problem.
Listen to the sound: A healthy parrot should have a crisp, melodious call, not a hoarse, hoarse sound. If a parrot's calls are unhealthy, it may indicate that it has respiratory or lung diseases.