Topic: The Dream of Protecting the Blue Sky\Friends of Humanity\Elf Protecting the Sky\Protecting Forest Guards\Protecting Birds...
Information "Bird Knowledge"
< p> The function of the bird's nestWhat are the functions of the bird's nest? It is generally believed that it can first bring the bird eggs together so that all the bird eggs can be hatched by the parent birds in the nest at the same time. Bird's nests are mostly made of plant fibers, animal hair and bird feathers. They have a certain insulation effect and can slow down the cooling of the eggs that have been hatched due to the short-term departure of the hatching parent from the nest. For late-adult chicks, their body temperature cannot remain constant in the first few days after they are hatched, and it is easy to change their body temperature with changes in the weather. Therefore, the parent bird needs to warm them as often as when they are hatching eggs. The bird's nest plays a role in slowing down heat loss. When a storm comes, the parent bird lies in the nest, stretches out the feathers on its wings and tail, and uses its body to form a rain-proof "umbrella". In summer, the parent bird lies in the nest, flapping its wings from time to time and rolling the eggs back and forth with its beak, which can shield the eggs from the sun and cool them down. It can be seen that nest building is an important part of bird reproduction. Since many birds can build their nests in very hidden places, coupled with some camouflage, the brooding parents, eggs and chicks are safer. Some birds make full use of their flight advantages to build their nests on cliffs or among the twigs of high treetops, so that even if various natural enemies discover their nests, they are out of reach. Bird nests and bird nesting activities are important factors in stimulating sexual physiological activity for paired birds. Through the stimulation of the opposite sex, especially when birds start to build a nest or in their own nests, the signals sent by the visual and tactile organs, through the integration of the brain, can promote the accelerated secretion of estrogen in the body, thereby causing the egg cells in the body to Rapid maturation and discharge so that reproductive behavior is not interrupted. Many birds recognize the nest but not the eggs. They will hatch the eggs as soon as they see their own nest. Even if the eggs in the nest are replaced with glass balls or stones, some birds will still hatch them without any care. But if its nest is destroyed, the incubation behavior will immediately cease.
Why do swallows fly south for the winter?
Swallows are a migratory bird. In the autumn before winter comes, they always make their annual long journey - flying in groups from the north to the far south, where they enjoy the warm sunshine and humid weather, leaving behind the severe winter frost and biting cold. The wind is left to the chickadees, grouse, and ptarmigans that never fly south for the winter. On the surface, it seems that the cold winter in the north causes swallows to leave their hometown and go to the south to spend the winter. When spring comes, they return to their hometown to have children and live and work in peace and contentment. Is that true? Not really. It turns out that swallows feed on insects, and they have always been accustomed to catching flying insects in the air. They are not good at searching for insect food in the gaps between trees and ground, and they cannot eat berries, seeds and other insects like oak grouse and ptarmigan. Feeds on leaves instead in winter (coniferous species do not lose their leaves even in winter). However, in winter in the north, there are no flying insects for swallows to prey on, and swallows cannot dig out the larvae, pupae and eggs of hidden insects like woodpeckers and woodbirds. The lack of food forces swallows to make a great north-south migration from autumn to spring every year in order to obtain a wider living space. Swallows have become the "nomads" in the bird family.
Benefits of Birds
Many birds are dispersers of plant pollen and seeds, especially in tropical areas. According to statistics, there are more than 80 species of birds in Australia that feed exclusively on nectar. Among them, bee-eaters, sunbirds, white-eyes and parrots are found in southern my country. They fly between flowers and spread pollen while sucking nectar. Birds that feed on plant seeds, especially jays and star jays that are widely distributed in the north, contribute to the spread of many tree species and are natural "plant afforestation" experts. For example, star crows are fond of eating oak seeds, and have the habit of storing acorns in autumn. They often collect hundreds of acorns and store them in different corners far away, but they often forget that these scattered acorns are the expansion of oak trees. A reason.
The crisis of birds
There were once 160,000 species of birds on the earth, and the Third Age was the heyday of birds. During the four major glaciations at the time of the update, about 25% of the bird species were extinct.
After humans appeared in the late Pleistocene, one bird species became extinct every 83 years on average. In the 300 years from AD 1600 to AD 1900, 90 species of birds became extinct. There are more than 9,000 species of birds existing in the world. By the end of the last century, another 400-500 species had become extinct. Among the reasons why birds are endangered, habitat change or destruction accounts for 60%, and human hunting accounts for 29%. According to surveys and estimates, for every bird that disappears, 90 species of insects, 35 species of plants, and 2 to 3 species of fish associated with it will also disappear; at the same time, for every two species of birds that disappear, there will inevitably be a milk-catching species. Animals became extinct.
『Bird Protection』
Protected birds in my country:
Category 1 protected birds (special products, rare or endangered species in my country)
Horned grebes live in Xinjiang, Northeast China, and North China, wintering in the lower reaches of the Yangtze River
Short-tailed albatrosses breed in coastal provinces in Taiwan and nearby islands
Spot-billed pelicans Coastal provinces and Yunnan, Shanxi, Xinjiang, etc.
Boobies overwinter in Shanghai, Taiwan and Hainan Island, and breed in the Paracel Islands
White-bellied frigatebirds on Guangdong coastal islands
White storks breed in western Xinjiang, northeastern Inner Mongolia, Northeast China, and the lower reaches of the Yangtze River
Black storks breed in the northeast and northwest, and winter south of the Yangtze River
Crested ibises are only found in Yang County, Shaanxi
Colored Ibis on the coastal islands of Zhejiang and Guangdong
White Ibis breeds in the northern part of Northeast China and overwinters in Guangdong, Fujian and other places
Black Ibis in southern Yunnan
Chinese Merganser Northeast, Central China and Guizhou, Fujian, Guangdong
Crested Shelduck Northeast, Chengde, Hebei
White-shouldered Eagle Xinjiang Tianshan, Qinghai Lake, Qinghai, and the middle and lower reaches of the Yangtze River
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White-tailed sea eagles breed in the Northeast and the lower reaches of the Yangtze River, and winter along the southern coast
Steller's sea eagles in Lushun, Yingkou and Hebei, Liaoning
How to protect birds
1. Curbing the phenomenon of hunting
Nowadays, many valuable and rare birds have become food on the dinner table and the targets of people's hunting. Serious problems have been exposed, and if no measures are taken, I think the last bullet in people's shotguns will be reserved for themselves.
The first is "blocking", which means strengthening market management and blocking the circulation channels of wild animals in the market. The reason why those who are trying to kill wild animals ignore the law and still go their own way is The main reason for the large-scale killing of wild animals is that wild animals can be sold at high prices in the market. As long as the game they kill cannot be sold in the market and will be punished by law, the hunting of wild animals will be greatly reduced.
The second is "sparing", which means strengthening publicity and education to the people, making people realize the importance of protecting wild animals from a high level, and letting people have legal concepts in this regard can only clear the people's minds. In order to do a good job in protecting wild animals in practical actions, Mao Zedong once said: "The people are the basis of war." Therefore, to fight the war of protecting wild animals, we must do a good job in the work of the people.
The third is "attack", which means to go deep into the people, rely on the people, and set up various reporting systems on the basis of unblocking the people. Once we receive news of illegal hunting and touting, we should attack immediately. . Whoever dares to disregard the law will be punished by the law without mercy. "Crackdown" is a method, and only by cracking down hard can wild animal resources be protected.
The fourth is "raising", which means to appropriately meet people's needs and establish a wild animal breeding base on the basis of protecting wild resources. Many birds have high food and medicinal value. Bird raising can promote the rural sideline economy and enable breeders to get rich; objectively, it also reduces people's hunting of wild animals and protects limited animal resources. This move can be said to kill two birds with one stone, why not do it?
2. Establish protection agencies to combat illegal hunting