Importance of birds in pollination and their ability to devour insects.
Birds are found throughout the world, at approximately all altitudes and in nearly every climate. The fame of birds is attested to by their universal adoption as household or backyard pets, by the great upsurge in the ranks of bird-watching hobbyist, and by the curiously high attendance figures recorded at the aviaries of major zoos.
Possibly their most startling feature is their capacity to soar through the sky, a power that has fascinated man through history. The bird is one of the earth’s smallest animals, serves mankind in an amazingly large number of ways.
Hummingbird via Wikipedia
Its role in pollination is of crucial importance, which enables man’s vegetative food supply to flourish. Certain birds eat seeds poisonous to plants; and other eats rodents that destroy grains and materials.
In addition significant is the bird’s ability to devour insects, such as the locust, which are destructive to animals and plants. Bird meat and eggs are high in nutritional value and are part of the diet of numerous nations. Bird products, too, are important. The dried excrement of sea birds are used as a fertilizer. Bird plumage is used in costume ornamentation.