Why do birds chirp quite happily when it's almost dawn but not so much when it's completely light?

On the one hand, most birds lack rod cells (light-sensitive cells in the retina) in their eyes, so they can't see at night. There are two different kinds of photoreceptor cells in the retina, one is called cone photoreceptor cells and the other is called rod cells. Cone cells are mainly used during the daytime, while rod cells are mainly used at night, i.e., when the light is dim. For example, owls and other nocturnal birds have a lot of rod cells and fewer cone cells in their retinas. So it is able to forage for food freely at night when there is no light to be seen. By the time it is almost dawn, there is the stimulation of light, the bird is particularly excited, so it chirps, which is an instinctive response of the bird.

On the other hand, early birds have food to eat, rest for the night, the same as people, early in the morning, small birds are hungry, chirping and calling, the big birds to catch food and small birds to eat, a to call, but also squeaking, so early in the morning people will hear the birds chirping, very good to hear, to the day dawn, the birds are full of food, but also tired of calling, nature a in the state of quiet, when the people and began a day of busy, of course The first thing I want to do is to get rid of all the stuff that I've been doing, and then I'm going to get rid of the stuff.

The early bird gets the worm. After a night's rest. When they get up in the morning, they go out to look for food. So the morning chirping continues.

I think it should be similar to the cock crowing. Chickens and birds both belong to bird animals, I think, this may be their ****iness. It's just that chickens crow a little earlier than they do.

Birds are a group of living creatures in nature that give birth to the sky. Within this group of organisms, they are divided into many smaller groups. I think it is very likely that in each of their small groups of the same subject, there is a kind of **** the same use of ''bird language'', used to communicate, to pass on all kinds of information. In order to make this group, gathered together to carry out "activities", there may be a "group leader" to be responsible for leading, organizing activities, and take corresponding measures to protect the living environment, against "hostile "

The first time I saw this, I was able to see it in the background, and I was able to see it in the background.

Before the dawn came, are generally the same type of birds, gathered together to carry out activities, the number of first from less to more, the call is also from small to large, from low to high, from the solo to small chorus to large chorus, and from the low tide to the climax. At the end of their assembly, after separating, they have to call each other and say a hundred words of peace! They gather in the morning, I think, there may be the following content: First, bid farewell to the night, to meet the pre-dawn summer

light, thanks to the sun to bring them a new day of the reverse ceremony. Second, under the leadership of the "group leader", summarize the lessons learned from yesterday's work, brainstorming, democratic, free speech, scientific arrangements for the new day's work. Third, it may be that we dance together in the "square dance" and other fitness, vocal practice activities for a while, they are dispersed, start a new life.

People have their own way of living, birds have their own way of living, the purpose is the same, that is, to protect the population, to maintain the living space, the pursuit of health, happiness and freedom of lifestyle.

Because the birds woke you up when you were asleep, you must have felt that they were screaming happily, and after you woke up, you must have been busy doing something else, so you ignored the birds' screams.

The birds are resting for the night, and when it is almost dawn, they are calling to their companions: it is dawn, get up, eat. When the day dawned and the weather began to heat up again, the birds ate and drank and then began to rest!

Because the morning air is especially fresh and the surroundings are quiet and fragrant, the birds chirp like roosters, and they crow like roosters throughout the day. The birds are particularly alarmed at times when they realize that there is something dangerous around them, such as a snake, and this time of the day the alarm will make a lot of noise and draw the attention of other animals and the same kind of attention.

People have people's words, animals have animal language, dawn and fly, sunset and roosting is also the habits of birds and animals. It is the same reason that people plow at sunrise and rest at sunset, except for tigers, wolves, apes, rats, and so on.

The day wants to dawn, the bird has woken up, called friends to work, either catching insects, or foraging for food, or grass in the nest, each with their own discussion, each with their own action, discussion, and then conducive to action.

The first thing you need to do is to get your hands on a new computer, and you're going to be able to do that.

They are the first to be able to do so, and they are the first to be able to do so, and they are the first to be able to do so!

This is the habit of the past and present, but also the birds and flowers of the King Ming, harmony in nature, will get the flowers auspicious, birds, wind, light, relaxed and happy, spring breeze, smile and chest!

When the day is fast approaching, the birds are screaming quite happily, but after the day is completely bright, but not much screaming, this phenomenon is like human beings to open the "morning meeting" after their respective return to work.

Birds belong to the group of animals, there is a strict organizational discipline and activity rules, usually see a group of birds in the sky or rows of lined up or lined up, or at the same time to fly to a direction location, it is not difficult to see their regularity and organization of how strong.

Back to work, some of the birds will also be called, but not like the morning as a group of chattering, which is very similar to human habits, so the use of "morning meeting" to describe this phenomenon is more appropriate.

Dawn is beautiful, full of excitement, the birds after a night of practice, they are full of energy, so they chirp happily.

And because of the low temperature at night, the small insects have moisture on the body can not run far away, the birds will have to eat, happy to show off each other, so called happy.