Question

Explain how birds have adapted themselves to an aerial mode of life.

Answer 1

Hint Birds are warm-blooded vertebrates that live in diverse habitats and migrate to warmer countries whenever the weather changes. They have various adaptive features that help them to fly which includes the presence of feathers.

Complete answer:
Birds have adapted themselves with air sacs and feathers that make them adapt to the aerial mode of life. They show less diversity due to their adaptation for the aerial mode of life and inhabit an aerial environment whereas a few inhabit an aquatic environment. Due to the endothermal or warm-blooded body birds adapted to the aerial mode of life and the body of the birds are streamlined and compactly arranged in a manner to suit their adaptation for flights. The body is light and spindle-shaped due to the presence of air sacs with modified forelimbs as wings. The weight of the birds is born by the hind limbs and they are large. The body is covered by today and forms the part of the exoskeleton which are of four types that includes contour, filoplumes, quill feathers, and down feathers. Birds help in social communicating with their visual signals and participate in several behaviors search as cooperative breathing, locking, and mobbing of predators.

Additional information:
Some species of birds make importance as food for human consumption android material with help in many capturing and domestic eating that helps in sources of eggs, meat, and feathers. It is estimated around 120 to 130 species of birds have become extinct due to human activities and human activity threatens about 1200 bird species with extinction. The diet of the birds includes various nectar, fruit, plants, and other birds. They apply many strategies to obtain their food or feed other food items which are known as generalists. Some species of birds concentrate on time and effort for specific food items and applied single strategies for obtaining this and are known as specialists.

Note: Birds vary in different sizes from the largest ostrich which is up to 2.7 meters in height to the smallest living bird which is the hummingbird that is about 5.5 centimeters in height. An albatross is the only board that sleeps while it flies.