What do cuckoos do when they lay eggs?

Rhododendron, also known as du Yu, Zi Gui, Chu Gui, etc., often refers to about 60 arboreal species of the subfamily Rhododendrinae and Rhododendrinae, distributed in temperate and tropical regions around the world, especially in the tropical regions of the Eastern Hemisphere, inhabiting places with dense vegetation. its sound is often heard but not its shape, and the most well-known characteristic is the parasitism of hatching eggs. Let's take a look at how cuckoos lay eggs.

The most well-known characteristic of rhododendron is the parasitism of hatching eggs, which is found in all species of the subfamily Azaleae and three species of the subfamily Azaleae, that is, they lay eggs in the nests of certain species of birds and hatch and raise their young by adoptive parents. The parasitic cuckoo lays its eggs in the nests of other birds and is usually born earlier than other birds. as soon as it is born, it pushes other eggs out of the nest and is fed by adoptive parents. The ground cuckoo uses branches to nest in the low vegetation, and both females and males take part in egg-holding and brooding.

How can a cuckoo parasitize its eggs in another bird's nest without being discovered? At the turn of spring and summer, female cuckoos will carefully look for the nests of birds such as thrushes and Reed warblers before laying eggs. After the target is selected, they will make full use of their similar shape, size and body color to fly from afar. The cuckoo also flies like a raptor rock harrier, flying very low, turning sharply to the left and right. Occasionally flapping wings, flapping loudly, used to intimidate birds that are hatching eggs. The cuckoo achieved the purpose of intimidation when the hatching bird saw the figure of the bird of prey soaring at low altitude and ran for its life.

How does a cuckoo throw its eggs into other people's nests? Some are laid directly, but for nests that are too small or difficult to get into, they will first lay eggs, and then carefully put the eggs in the middle of other eggs with their beaks. But before releasing their own eggs, cuckoos often remove one of other people's eggs from the nest (eat or throw away).

The cuckoo is much larger than some birds, but the eggs it lays are very small, and the cuckoo eggs are strikingly similar to those of the nest owner in shape and color (the result of natural selection), so they can mix fish eyes with beads, and it is difficult for other birds to tell the true from the false. Although cuckoo eggs are small, they grow quickly and tend to hatch earlier or at the same time than those of nest birds.

As soon as the cuckoo was born, he was busy working as a porter, carrying another bird (or egg) on his back, supporting it with its undeveloped wings and crawling cautiously towards the nest. He bowed his head, put his forehead against the bottom of the nest, suddenly leaned back sharply, and lifted the chick (or egg) on its "shoulder" up and turned it out of the nest. Then the little "porter" slid to the bottom of the nest, went under another victim and continued his work.

The little cuckoo has a desire to get rid of everything in the nest a few hours after it hatches. When the godmother came back and saw the only chick left in the nest, she would love the murderer as a darling and nurture the little cuckoo more carefully. After the little cuckoo had full feathers, she left without saying goodbye and flew away.