The coelom of birds (pigeon) is well developed and divided into two cavities, anterior thoracic and posterior abdominal cavities, by a membranous oblique septum or diaphragm. The thoracic cavity has two dorso-lateral pleural cavities, each enclosing a lung. The two pleural cavities are separated from each other by the antero-ventral pericardial cavity enclosing the heart lying in the middle between [...]
In this article we will discuss about the external structures of pigeon. The size varies from 20-25 cm. The appearance varies in different varieties but all of them have a compact and more or less spindle-shaped body (Fig. 1.103). The body is distinctly divisible into three regions — head, neck and trunk. (i) Head: The head is small, round and [...]
In this article we will discuss about the respiratory system of pigeon. The aerial mode of life requires extra energy. In order to get energy, pigeon eats large quantity of food and to break down the assimilated food at a faster rate, the respiratory system is extensively modified. The lungs are proportionately smaller in size, but the functional efficiency is [...]