Game Birds of Nigeria
HISTORY AND CLASSIFICATION OF BIRDS
The problems of classification of birds Has gained the attention of ornithologist and many systems have been proposed in order to establish their lineage until the beginning of the 19th century. The problem was solved in a rather over simplified way by using only significant characters especially external life forms and way of life and diet. Thus these birds whose toes are joined by welds where grouped in the natatoes. Those with long legs in the gralatories, those distinguished by their arrangement of their toes and their ability to move up and down tree trunks in the seanoords and those with hooked bills and carnivorous diet in the rapores.
It is to Charles Darwin an evolutionist that we owe a new approach to systematic placing of birds in a sequence which reflects in the phylogenic and grouping them according to their actual (.......). Other notable works on modern classification of birds are peter (1931-1981) and Wetmore (1961) on grouping birds along the phylogenic hierarchy either on orders, family, genus and species. Their work have been accepted by very many ornithologist especially in America and western Europe. The characteristics used by peter and Wetmore in grouping birds into their various phylogenic groups are examined as; 1. Birds classed as vertebrates (chordate). The chordate designation means that birds belongs to a large division (phylum) of animals which includes all the form possessing the common bone. 2. BIRDS CLASSED AS AVES: these class aves encompasses the well-defined group of animals which includes all the birds and nothing except the birds. The best known animals easily observed single characteristics classes is the type of integumentary covering or outside rapping which in the case of birds are the feathers. The feathery covering is the only obvious feature not possessed by other animals. 3. Ordinary characters for birds are often based on internal features such as the characteristics of the
The problems of classification of birds Has gained the attention of ornithologist and many systems have been proposed in order to establish their lineage until the beginning of the 19th century. The problem was solved in a rather over simplified way by using only significant characters especially external life forms and way of life and diet. Thus these birds whose toes are joined by welds where grouped in the natatoes. Those with long legs in the gralatories, those distinguished by their arrangement of their toes and their ability to move up and down tree trunks in the seanoords and those with hooked bills and carnivorous diet in the rapores.
It is to Charles Darwin an evolutionist that we owe a new approach to systematic placing of birds in a sequence which reflects in the phylogenic and grouping them according to their actual (.......). Other notable works on modern classification of birds are peter (1931-1981) and Wetmore (1961) on grouping birds along the phylogenic hierarchy either on orders, family, genus and species. Their work have been accepted by very many ornithologist especially in America and western Europe. The characteristics used by peter and Wetmore in grouping birds into their various phylogenic groups are examined as; 1. Birds classed as vertebrates (chordate). The chordate designation means that birds belongs to a large division (phylum) of animals which includes all the form possessing the common bone. 2. BIRDS CLASSED AS AVES: these class aves encompasses the well-defined group of animals which includes all the birds and nothing except the birds. The best known animals easily observed single characteristics classes is the type of integumentary covering or outside rapping which in the case of birds are the feathers. The feathery covering is the only obvious feature not possessed by other animals. 3. Ordinary characters for birds are often based on internal features such as the characteristics of the