Like finches, weaver birds like to hang houses in the air. Their nesting materials are very strict and must be soft and strong plant fibers. On the other hand, the weaver bird has the ability to cut velvet. It pecks at the edge of grass or palm leaves with its mouth, then suddenly flies, and it will tear off a fiber. It used to be said that when a weaver builds a nest, the female bird lies in the nest and the male bird is outside, crossing the fiber thread back and forth, just like weaving, so it is called "weaver bird". Later, scientists made a lot of observations and found that it can only be a beautiful legend that men and women "weave" to build nests together. Among the weaver birds, the real weavers are all "men", and the nesting work is mainly undertaken by male weaver birds. The process of nesting is very similar to that of birds climbing. It is to weave several ropes first, and then tie them together, but the male weaver bird is better at tying knots, and it will tie different kinds of knots in different situations, so the weaver bird is not "weaving" but "knitting" exactly. The last nest is like a round-bottomed flask. The enlarged part at the lower end is the nest room, and the entrance to the nest room is reserved at the bottom side. Mud balls are often found in the nest room, which can increase the weight of the nest and make the nest hang firmly on the branches and not be blown down by the wind. Some weaver birds will also build a passage more than 30 centimeters long at the entrance of the nest and hang it down, making it difficult for animals such as snakes to enter. When the parent bird enters the nest, it can only fly from bottom to top and cannot stay at the nest mouth.
After the male bird has built his nest, he will also be eager to invite a "bride". In order to attract the female's attention, the male often hangs upside down at the bottom of the nest, makes various ostentatious movements, and even leads his neck to sing, but his singing is quite different from his exquisite weaving, squeaky and silent, with no other tone, far from being a good singer, or can only be counted as a "rock singer". The female bird doesn't hate this kind of singing. They can understand the male's thoughts well. They are only critical of men's works, and many older and experienced men have great advantages in this respect. Once the exquisite hut is selected, the female bird will finish the interior decoration of the nest. Some young males are obviously not skilled enough, and females are not interested in their nests, even if the males make a hullabaloo about. If after a week, no female bird wants to commit suicide, the male bird will tear down the "dream" he has worked so hard to weave, and then make persistent efforts to weave a nest again. One day, they will also win the favor of the female bird.