In this article we will discuss about Birds:- 1. Characteristic Features of Birds 2. Habit and Habitat of Birds 3. Structure 4. Digestive System 5. Respiratory System and Sound ProduÂcing Organ 6. Circulatory System 7. Nervous System and Sense Organs 8. Urinogenital System. Contents: Characteristic Features of Birds Habit and Habitat of Birds . Structure of Birds Digestive System of [...]
In this article we will discuss about the Migration of Birds:- 1. Definition of Bird Migration 2. Types of Bird Migration 3. Causes 4. Guiding Mechanisms 5. Disadvantages. Contents: Definition of Bird Migration Types of Bird Migration Causes of Migration Guiding Mechanisms in Bird Navigation Disadvantages of Bird Migration 1. Definition of Bird Migration: The word "migration" has come from [...]
In this article we will discuss about the classification of birds. 1. Subclass Archaeornithes [Gk. Archios = ancient + ornithos = bird] [1 species, Jurassic, Bavaria]: i) This subclass includes most primitive, fossil birds of Jurassic period and are known from Germany. ii) Wings had primitive feathers. iii) Tail feathers were arranged in a row along each side of a [...]