The following points highlight the top nine types of system in pigeons. The types are: 1. Muscular System 2. Digestive System 3. Respiratory System 4. Circulatory System 5. Lymphatic System 6. Nervous System 7. Endocrine System 8. Excretory System 9. Reproductive System. Type # 1. Muscular System: The muscular system of pigeon is extremely modified to meet the requirements of [...]
The following points highlight the top twenty types of Indian birds. The types are: 1. White Backed Vulture (Gyps bengalensis) [Fam. Accipitridae] 2. Spotted Owlet (Athene brama) [Fam. Strigidae] 3. Sarus Crane (Grus antigone) [Fam. Gruidae] 4. Malabar Pied Hornbill (Anthracoceros coronatus) [Fam. Bucerotidae] 5. Pariah Kite (Milvus migrans) [Fam. Accipitridae] and Others. Indian Birds: Type # 1. White Backed [...]
In this article we will discuss about the origin of flight in birds. Birds constitute a very specialised group of vertebrates which have evolved from reptiles during Mesozoic era. The actual documentary records of the stages showing how such reptiles were transformed into birds are rare because of the non-availability of abundant avian fossils. Two fossil specimens of Archaeopteryx discovered [...]