about birds

portion is drawn out into a carina or keel in flying birds for insertion of large muscles of flight. It forms a T-shaped girder to bear the weight of the heavy abdominal viscera. Projecting anteriorly is a pair of costal processes to which thoracic ribs are attached, posterolaterally are two pairs of xiphoid processes. ..

birds

-physis. Thoracic vertebrae are more or less fused together, though some are free, their centra are produced below into hypapophyses, their broad transverse processes bear ribs. Ribs are attached to thoracic vertebrae and are united ventrally to the sternum. The posterior thoracic, lumbar, sacral, and the first few caudal vertebrae are all fused t..

migration of birds

Individual organisms often move about in their environment in response to a varied group of stimuli. When such movements result in the temporary 1 or permanent absence froih one home range and the establishment of a residence in another, the resulting movement is said to be a migration (L., migrare -to travel). Majority of bird..

migrating birds

During their migration, most migratory birds display following significant features : 1. Time of migratory flights : The migratory flights of most migratory birds may occur during daytime or night-time and accordingly following two types of migratory birds can be recognised : (a) Diurnal migrants ..

bird animation

'Who is there to take up my duties?' asked^the setting sun. \ 'I-shall do what I can, my Master,' said the earthen lamp! The fish, in the water is silent, the animal on the earth is rjoisy, the' bird in the air is singing. But man has in him ' ^A, the silence of the sea, ^^ the noise of the earth and..

are birds mammals

These possess two kidneys, they are located in the lower back region. These kidneys show a great increase in efficiency compared with those of reptiles. Mammalian, and to lesser extent avian, kidneys can remove far more water from the glomerular filtrate than can the kidneys of reptiles and amphibians. Human urine may be as much as 4.2 tim..

bird migration

At certain times of the year, commonly in the rainy season, the adult winged queens and kings leave the nest in large numbers and fly high in the air. This is called swarm-ing or nuptial flight. Swarming often occurs simultaneously in many colonies to provide cross-fertilization. Mating takes place in the air. The kings..

birds animation

A hollow ball of cells formed by repeated cleavage of a fertilized egg-cell. Blastocyst A blastula or hollow ball of cells formed by repeated cleavage of the fertilized mammalian ovum. Blastocoel: A fluid filled cavity within a blastula. Blastomeres: The cells of a blastula. Allantois: A sac or bladder ..

herbivorous birds

Alligator is found in rivers and other fresh water habitats of America and China. The size is 34 m. Colour is steel grey on upper side and greenish on the lateral sides. Snout is blunt. The animal is odierwise similar to crocodile in structure and habits. G4VZ4Z/5 Gavial (Fig. 4.121) It is a larger sized (upto 6m) crocodilian found..

Mending a Bird

One morning we received an addition to the collection, which we could hear arriving when it was still a good half-mile down the road. I saw an Indian trotting rapidly towards the camp clearing, endeavouring with moderate success to keep his large straw hat on with one hand while with the other he tried to prevent something from climbing out of. a..

Explore More Pages

Recent Visited pages