The number of birds is one of the most diverse groups of animals on the Earth. They could be observed in very diverse habitats, in forests and mountains, deserts and oceans. Birds are very diverse in size, color, and behavior with thousands of species all over the globe.
Feathers are one of the most important characteristics that characterize birds. The feathers not only assist the birds in flight; they also insulate as well as protecting them. Their skeletal structure is also another significant feature since they are light and can move freely in the air.
The species of birds could be categorized into various groups basing on their physical features and some behaviors. An example is that there are birds that are known to fly over a long distance whereas other birds are designed to live on the ground or in water.
The other interesting factor about bird species is coloration. Other birds possess colorful feathers that are bright and they use them to attract other birds or to communicate with other birds. There are those whose colors are dull and this assists them to blend in the environment to avoid attack by predators.
Birds are also different in their feeding habits. There are also those species that feed on seeds and plants and others feed on insects or small animals. Others are birds which feed on fish and therefore are well adapted to the aquatic environment.
The size of birds may be very different. Others are small like humming-birds, and light in weight; others, such as the birds of prey, are large and strong-flied.
There are birds on all the continents and each area has its species. Climatic conditions, availability of food and habitat conditions are some of the environmental factors that affect the species of birds in a given area.
Knowing of bird species assists scientists to research on ecosystems and biodiversity. Birds can be regarded as one of the indicators of the environmental health, and the alterations in their population may be linked to the transformations in their environment.
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In general, the bird species play a significant role in the natural world and they are diverse, adaptive and beautiful members of the animal kingdom.