The sky above the ocean is not lonely either. There are more than 8,000 species of birds that soar over the ocean and obtain food from the ocean, accounting for about 30% of the world's known bird species. Although they need to build nests on land to incubate eggs and raise their young, they spend most of their lives on or flying across the ocean.
Seagulls flying over the sea
When people think of seabirds, they often think of seagulls, petrels and albatrosses. In fact, there are many types of seabirds. People are used to dividing seabirds into two major categories: one is called oceanic seabirds, such as albatrosses, which live over the ocean far away from the continent and can not land for several years except during the breeding season; the other is Coastal seabirds, such as gulls and frigatebirds, go out to sea to forage during the day and return to land to spend the night at night.
Birds on Bird Island
Albatrosses and petrels are typical ocean birds. They have large bodies and long wings. One of them, the Wanderer's Albatross, has wings spread over 3.6 meters long. Rain or shine, they fly over the ocean all day long. In the sea and sky at night with thunder and lightning, you can often catch a glimpse of their scurrying figures. The frigatebird with its red neck pouch is a typical inhabitant of coastal and bay waters. Seagulls are the most common marine birds. Their calls sound like cats. Fishermen in northern my country call them seagulls. In order to forage for food, seagulls often accompany warships and ships at sea, looking for fish and shrimps knocked unconscious by propellers at the stern of the ship. When the seafarers are having their meals, no matter they are sailing or anchored in the harbor, a large number of seagulls will come on time and compete for the leftovers discarded by the seafarers, adding a lot of fun to the lonely sea life of the seafarers. Seagulls are seafarers' good friends. Seafarers do not harm seagulls, and seagulls also trust seafarers. Some desert islands have been home to thousands of seabirds for thousands of years, flying up to block out the sky and the sun, leaving behind a layer of guano as hard as stone over time. For example: the guano layer on some islands in Nansha and Xisha in my country is several meters to tens of meters thick, making it an excellent organophosphorus fertilizer. Penguins are also marine birds. However, penguins' flight abilities have deteriorated. However, penguins can use their dexterous and powerful short wings to swim quickly in the cold water.
A flock of birds perching on the coast
Seabirds have superb diving skills. Most of them can dive to more than ten meters to hundreds of meters. The boobies can fold their wings from an altitude of more than 100 meters, like a fired cannonball, drill into the sea, dive for tens of meters, and then dive back again. Come to the surface. In order to prevent seawater from pouring into the nostrils during diving, the noses of these seabirds have lost the external nostrils after long-term evolution. The diving champion among seabirds is the penguin in Antarctica, which can dive to more than 270 meters of water. Seabirds also have the habit of migration. For example, Wilson's petrels breed on islands in the Antarctic waters and fly more than 10,000 nautical miles north to Labrador to spend the summer, and then return when the southern hemisphere summer comes. The navigation and orientation ability of seabirds is still a scientific mystery.
animal tags：
you may also like
In front of the dorsal line of the white-striped sawfish, there is a broad milky-white band surrounded by a narrow black edge that extends diagonally downward, passing through the posterior edge of the eye and reaching the back of the interopercular bone. It is a small warm-water fish that li...
White star grouper. The body is dark brown and the edge of the dorsal fin is white. There are white spots scattered on the sides of the body, dorsal fin, anal fin and tail fin, but the white spots on the side of the body are connected into irregular wavy markings. Body length 50 cm. Distribut...
Blue-spotted butterfly fish. Common name: blue seal butterfly. The body is yellow, with a horizontal band passing through the eyes on the head. There are about 20 brown longitudinal lateral lines on the side of the body. There are blue patches between the longitudinal stripes near the lateral...
The coastline is divided into two types: island coastline and mainland coastline, but the coastline is not a line. This sentence sounds obviously inconsistent with the logic of the green reefs and clear water in the inter-chao area, where people are busy catching seafood, but it is indeed a s...
Common name of black double sawfish: saddleback clown. Body tan. There is a wide white horizontal band on the back edge of the eye, and a second white horizontal band on the side of the body extends to the edge of the last spine and fin ray of the dorsal fin, forming a saddle-back shape. Body...
There are 18 species of penguins living in the world, including little white-fingered penguins, white-fingered penguins, yellow-eyed penguins, Magellanic penguins, Peruvian penguins, Galapagos penguins, emperor penguins, king penguins, Adrien penguins, and Antarctic penguins. , gentoo penguin...
The Arctic Ocean is roughly centered on the Arctic Circle and is located at the northernmost point of the earth. It is surrounded by the European continent and the North American continent. It is connected to the Pacific Ocean through the narrow Bering Strait. It is connected to the Atlantic...
Going south from the East China Sea through the narrow Taiwan Strait, we enter the turbulent South China Sea. The South China Sea is the deepest and largest sea in my country and the third continental sea in the world after the Coral Sea and the Arabian Sea. The South China Sea is located at...
Email: jsset#163.com (change # to @) Please indicate your purpose of visit! Guangdong ICP No. 2022053326 XML| map| Chinese
