Why does the parrot look down and look at people

There are many reasons for the crooked head of the parrot, which may be because of the visual limit, so you crooked your head to look at things, or collect your ears in a certain direction.However, it generally does not crooked its head all the time. If it is sick for a long time, the disease affects its nervous system, causing it to crooked its neck.In addition, if the lack of vitamins is likely to suffer from stargazing, visual cells are concentrated in a region, it will also cause it to tire.