The Shelduck is a large duck, what are the physical characteristics of the Shelduck?

What are the physical characteristics of the Shelduck?

1. The upturned nose shelduck is a large duck with a large upturned beak, and the male shelduck will grow a swan-like cortex during the breeding season, hence the name. Its plumage is very bright, all white, but has brown stripes on the chest, while the head is black with a green metallic sheen.

2. Morphological characteristics, like ordinary mergansers, the appearance of female ducks and male ducks is very different. Males usually have a cortex that appears prominently only during the breeding season and looks like a swan's beak, while females do not have this cortical tumor. Secondly, the feathers of both are different in color.

Males will have a patina-green metallic sheen on their heads, while females will not, with a lighter black background but a small white dot on their foreheads.

3. Although the breasts of both sexes have brown banded stripes, the males are darker and wider, with a dark brown vertical stripe extending below the abdomen in the middle, while the females have narrower and lighter stripes. Of course, the most striking common feature of the back-nosed duck is that the upper beak is more upturned than the average duck.

Shelduckhabits

1. Ducks like to live in groups, especially in the cold winter, they will form large groups of dozens or even hundreds, but during the breeding season, they prefer to live in pairs. They have a super flying ability that domestic ducks do not have. They migrate to the north in March each year to breed and then return to the south in October.

They mainly inhabit lakes or rivers and catch some insects.

2. The population status of the Shelduck, which is the most abundant waterfowl species in China. According to 1990 tree data, the total number has reached 19,180, and in Europe, it has reached 130,000. At that time, the global total reached 150,000.

And they have a wide range of habitats, so their population status is basically stable. Activities in wetlands such as freshwater lakes and rivers. In winter, it rises and falls with the tides and can be seen in unfrozen estuaries.

In winter, there are flocks of ten to hundreds of sheep. The diet of the duck is mixed. The breeding area ranges from the coasts of Norway, Sweden, the Black Sea and the Caspian Sea, as well as Central Asia, and eastward to Eastern Siberia and Mongolia.

In southern Europe, North Africa, the middle and lower reaches of the Yangtze River and the southeast coastal areas of China.

The body length of the duck is 52 to 63 cm. The abdomen is white, the head and neck are generally black or dark green, and the mouth is red. During the breeding period, the male has a red nodule at the base of the upper beak.

It is relatively long, and there is a cortical tumor on the mouth, and during the breeding period, this tumor will become more and more prominent, and it looks as beautiful as a swan, and different types of heads will have different metallic luster.

The shape of this duck is still very large, its body is relatively strong, and its power is also very strong.

It is found in Afghanistan, Albania, Algeria, Armenia, Austria, Azerbaijan, Bangladesh, Belarus, Belgium, Bhutan, Bosnia and Herzegovina, Bulgaria, China, Croatia, Cyprus, Czech Republic, Denmark, Egypt, Estonia, Finland, France, Germany, Greece, Hong Kong, Hungary, Iceland, India, Iran (Islamic Republic of), Iraq, Ireland, Israel, Italy, Japan, Jordan, Kazakhstan, South Korea, North Korea , Kuwait, Kyrgyzstan, Latvia, Lebanon, Libya, Lithuania, Macedonia, Malta, Moldova, Mongolia, Montenegro, Morocco, Netherlands, Norway, Oman, Pakistan, Palestine, Poland, Portugal, Qatar, Romania, Saudi Arabia, Serbia, Slovakia, Slovenia, Spain (Canary Islands), Sweden, Switzerland, Syrian Arab Republic, Tajikistan, Tunisia, Turkey, Turkmenistan, Ukraine, United Arab Emirates, United Kingdom, Uzbekistan, Yemen.

Traveling birds: Bahrain, Ethiopia, Ghana, Gibraltar, Guinea-Bissau, Lao People's Democratic Republic, Liechtenstein, Luxembourg, Mauritania, Myanmar, Nepal, Philippines, Senegal, Sudan, Thailand, Vietnam. It is distributed in Heilongjiang, Jilin, Inner Mongolia, Gansu, Qinghai and Xinjiang.

It inhabits various habitats such as rivers, lakes, estuaries, ponds and their nearby grasslands, wastelands, swamps, beaches, farmlands and sparse forests in the plains. It lives mainly in inland freshwater, but is sometimes found on seaside beaches and saltwater lakes, as well as in open grasslands away from water.

The population of the Shelduck has always been very abundant in China and is one of the main hunting objects in China. However, their populations have not been specifically surveyed in the past. According to the Asian waterbird survey organized by the International Waterfowl Research Agency in 1990, there were 19,188 in China, 475 in Japan, 177 in South Korea, 359 in Bangladesh, 656 in India, and 416 in Pakistan, totaling about 25,000 in Asia.

In Europe, it is 130,000. The total population in the world is about 150,000.

The species has a wide distribution range, which is not close to the threshold of vulnerable and endangered species survival (distribution area or fluctuation range is less than 20,000 square kilometers, habitat quality, population size, and distribution area fragmentation), and the population trend is stable, so it is evaluated as a species without survival crisis.