What's wrong with the fluffy of tiger head and phoenix feathers

Tiger head and phoenix feathers are fluffy because of the cold climate.This bird is very widely distributed in my country. It belongs to the summer bird in the Northeast, while the provinces and cities along the south are winter migratory birds, and other places are birds.It can be seen that its temperature requirements are relatively high, so it must be kept warm in winter. You can cover the cage with a cage cloth or provide it with a windproof nest.Essence