How to keep warm in winter

In winter, put the blue song cage into the room. Do not hang it at the door, otherwise it will be blown by the wind.The length of this bird is between 12-14 cm and is usually separated or paired. Most of the time, it will walk and jump on the ground, and rarely inhabit on the tree.I am good at hiding and can hide in the forest, not to be discovered by other creatures.It mainly eats insects, as well as spiders, mussel shells and small vertebrates.