The yellow bird is good or small

The yellow bird is better, because the hair is tight, bright, the battle is upright, and it is more active.Choosing the length of the yellow bird is its length, from the tip of the mouth to the tip of the tail at least 12 cm.Secondly, it depends on the body, mainly check whether symmetry.Then look at the tail, it is best not to split.It also depends on the feathers on the head. The feathers must be clean, preferably numb.Finally, it depends on the feather color, and the color is pure.