What Is A Species?

In the field of biology a species is known as one of the basic units which are found in biodiversity and mainly consists of individual organisms, these organisms are very similar in their appearance, physiology, anatomy and genetics due to the fact of having common ancestors. In short and common term, species can refer to a group of same looking biological animals, for example, Humans (Males and Females), Animals (Lions, Tigers, Dogs, Cows and Cats), Birds (Pigeons, Crows, Eagles, and Vultures) and Fishes (Whales, Dolphins and Fresh Water Fishes).  All these biological creatures are found in the ecosystem of the planet, and are referred to as the different species that are found. For example the pigeon comes under the specie of 'C. Livia' better known as 'Columba Livia.'