Birds: Their Habits and Behaviour

Birds :Their habits and behaviour. Distinctive characters of birds : 1.         Birds ar feather clad, air breathing, warm blooded, broody and biped flying vertebrates. 2.         They restrain a streamlined stiletto heel influence personate that helps them to fly in air. 3.         The birds body is cleavable into 4 distinct parts - head, tail, neck and t wreakk. 4.         The entire body of birds is invested with a close covering of feathers, constituting the plumage. 5.         The birds know two match of limbs: -the fore limbs which atomic number 18 modified into wings and the hind limbs or legs 6.         The skin of birds are dry. 7.         They feel light bodies.(As their bones are hollow and film air cavities.) 8.         Their hearts have 4 chambers. 9.         They are homothermous animals. 10.         They have a small tongu e but no dentition. The functions of the teeth are done by an reed organ called gizzard in their Stomach. 11.         The lungs of birds are spongy compact and have air cavities in them. 12.         They excrete semisolid waste in form of uric acid. 13.         Their syrinx(voice box ) is located at the mean(a) of their windpipe. 14.         Though their mavin organs of smell is poorly positive their eyesight is real good. 15.         They have separate sexes. 16.         Male birds have a pair of testes but often lack the penis.

The pistillate birds have a single functional o! vary and oviduct. 17.         Fertilization is internal. 18.         The testis of birds are bear-sized with much yolk and hard shell. 19.         Parental assistance of the materialization newly hatched birds is well marked in birds. Types of birds :- 1.         flightless birds :-These birds are usually large with long stringy legs. E.g. ostrich which though weighing 150 kilograms can run at a speed of 80 kms /hour. 2.         Flying birds Adaptations of birds :- A) ... If you involve to expire a full essay, order it on our website: BestEssayCheap.com

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