Birds are instantly recognisable creatures. Perhaps it is their shape was the most distinguishing might consider that Everyone however, agrees on the that a bird possesses. two wings, two legs, a toothless bill or warm blood, and it lays eggs. The modern system of classifying birds is like a pyramid, with the base formed by 85 14 different species. A convenient definition of species is: an interbreeding group of birds which 10 do not normally mate with other such groups. The next division above the species is the genus, a group of species showing strong similarities. The scientific name of a a bird gives the genus first, then the species. Thus, the scientific(Latin) name of the golden eagle is'Aquila chrysaetos' (eagle,