1. Apply hot melt adhesive to hot melt adhesive.

2. Glue all the hot melt adhesives together.

3. Highlight the outline of the house.

The importance of houses to human beings is self-evident. Animals also need houses. Some live in caves directly, while others build their own houses. For example, birds are the greatest architects in nature, and even the Bird's Nest in China is inspired by the Bird's Nest, which is not only very beautiful, but also very durable.

However, in the wild, many nests you see are open upwards. What should you do when it rains? In fact, many people misunderstand the function of bird's nest. Unlike human houses, they are used to shelter from the wind and rain, mainly to reproduce.

Birds are busy. They go out early and return late every day, and only stay in the bird's nest at night. One of the purposes of the Bird's Nest is to lay eggs. The mother bird will lay eggs in the nest and wait until the number is enough to hatch. If it is in normal times, they are rarely in the nest, and they are basically flying around outside looking for food.

The reason why the bird's nest doesn't have a roof like a human house is because birds are not afraid of rain. On the contrary, many birds like rain, like swallows, and like to comb their hair on telephone poles in rainy days. Because birds' feathers are rain-proof, rain drops on them and will flow away directly. It's like they are wearing an invisible raincoat.