See the Appearance of Bird House and Materials

How do so many types of bird cages that pick it up?

Look at the appearance. Regardless of the bird house, cage, the first look is to be positive. It is also clean, neat, no burrs, no dirty, not greasy, be beautiful.
Watch the material. Don't look at the bamboo color, think that it is old. Some are soaked with the water, so that the color of the bamboo changes. Such a bird house is difficult to colors, even if it color does not transparent, it is worthless. Good bird house bamboo, you must have, from top to bottom, even the good workmanship is a new bird cage, the good color of the disk will be very fast.