There are two main types of swiftlets: the house swallow and the golden-rumped swallow.

The difference is that the house swallow prefers to nest under the eaves of the house, and its chicks like to defecate outside the nest, so there are always endless droppings under the nest.

The nestlings usually excrete inside the nest and the adults throw them away, so there is no feces under the nest.

Secondly, the size and shape of the golden-waisted swallow is basically the same as that of the swiftlet.

But the biggest difference is that the golden-waisted swiftlet has a circle of yellow feathers on its abdomen near the tail, which is the origin of its "golden waist".

The relationship between swallows and humans is very cordial, so what special skills do swallows have.

1.The swallow's body is streamlined and its two wings are narrow and long, vibrating 20 times per second.

2.The tail of the swallow is almost one third of the entire body length, and these are particularly important for flying.

3. Swallows are particularly light, with an average weight of only 20 grams, making them the lightest of pilots.

In terms of food, swallows are mainly fed on insects such as mosquitoes and flies.

They are never accustomed to catching flying insects in the air, and are not good at searching for insect food in the cracks of trees and gaps in the ground, and are known to be beneficial birds.

1.Wild swallows: they like to eat mosquitoes, flies, locusts, butterflies, moths, earthworms, green worms, grasshoppers, etc.

2.Artificial feeding: you can occasionally feed vegetable leaves or other grains

Swallows are used to building their own houses and nests for the simple reason that they want to breed their offspring.

Therefore, if a pair of swallows have no change from the first nesting, they will still find the old nest exactly the following year when they return to the north and simply repair it, and then they can breed.

The swallow is one of the most flighty members of the bird family.

Its flight speed is very fast, up to 110 km per hour, about 2 to 3 times faster than that of sparrows.

Swallows have high flying skills: they fly fast against the wall for a while, and then rush vertically into the clouds.

They can suddenly make a 180-degree turn.