Why do birds make different calls?

It is the season of birds singing, flowers blooming, and gentle breezes. After a cold winter, the children who have been bored are looking forward to going out to play. Many parents take their children to the wild to enjoy the spring scenery. This can not only broaden the children's horizons, but also let them feel the beauty of spring and enhance the friendship between children.

As we all know, children are very curious. When they see colorful flowers, they will stop to admire them. When they hear the melodious chirping of birds, they will listen attentively. Some children like to think and ask, "Why do birds chirp? And why do they chirp in different ways? Some chirp and some chirp." This is an interesting topic, and we can explain it from two levels:

1. How do birds make sounds?

2. What is the purpose and significance of bird sounds?

Let us introduce them one by one below.

01. How do birds make sounds?

This question mainly addresses why some birds make cooing sounds while others make chirping sounds. In fact, the answer is very simple, because the vocalization systems of different birds are different.

The essence of sound has never changed. It is caused by the vibration of the vocal system. The essence of sound is a wave.

In fact, like us humans, birds also use their mouths to make sounds. However, the vocal system of birds is slightly different from that of humans, so in general, we call the vocal system of birds the syrinx.

The system structure is as follows:

We can understand it this way, from the perspective of vocal structure, it includes trachea, vocal muscles, semilunar membrane, internal and external vocal membranes, bronchi and other structures.

In terms of vocalization power, airflow and nerve control are the core, and together with the resonance system of the cavity, they constitute the overall vocalization system of birds.

The differences in each part will lead to differences in the sound. For example, the length, thickness, and shape of the trachea will lead to differences in the sound, and the same is true for the size and type of animals.

Because of this, different birds can make different sounds, some cooing, some chirping.

02. What is the purpose and significance of bird sounds?

This is another way of thinking in answering the question, which is why do birds choose to sing and what is the use of it?

**First of all, bird songs can be used to convey information. **Every spring, when flowers bloom, birds chirp and flowers bloom everywhere, which has become a standard feature. In fact, many birds chirp to convey information. For example, the chirping in spring is most likely a cheer for reproduction.

**Another example is the use of birdsong to warn others. **When a group of birds are foraging, there are often special birds for guarding. Once they find an enemy, they will immediately warn others by singing, which can help other birds escape from danger in time.

**In fact, bird songs also have an effect on us humans. **For example, many people like bird songs, as the poem "Bird Song Stream" says: When people are idle, the sweet-scented osmanthus flowers fall, and the spring mountains are empty at night. The moon rises and startles the mountain birds, which sometimes sing in the spring stream.

In fact, we can also use bird calls to protect birds. Humans have their own language, and animals have their own language, and birds also have their own language.

For example, the following is a study of the calls of North American warblers. It can be seen that different birds have different singing durations.

The spectrum can also be detected

With this information, we can then locate the species of birds, their behavior, and even interpret what they mean.

This makes it much easier for us to protect birds. It can be seen that the singing of birds is also useful.