Nal Sarovar Bird Sanctuary, consisting primarily of a 120.82-square-kilometre (46.65 sq mi) lake and ambient marshes, is situated about 64 km to the west of Ahmedabad near Sanand Village, in the Gujarat state of India. Mainly inhabited by migratory birds in winter and spring, it is the largest wetland bird sanctuary in Gujarat, and one of the largest in India. It was declared a bird sanctuary in April 1969 The lake attracts over 210 species of birds in the winter, and harbors a variety of plants and animals. Besides a few mammalian species including the endangered wild ass and the black buck, its migratory bird population includes rosy pelicans, flamingoes, white storks, brahminy ducks and herons. Thousands of migratory waterfowl flock to this sanctuary just after the Indian monsoon season. The shallow area and ponds on the outer fringes of the lake attract the wading birds that feed in the shallow waters. Millions of birds visit the bird sanctuary in winter and spring. It h...
Pigeon Trained domestic pigeons are able to return to the home loft if released at a location that they have never visited before and that may be up to 1000 km away. A special breed, called homing pigeons has been developed through selective breeding to carry messages and members of this variety of pigeon are still being used in the sport of pigeon racing and the white release dove ceremony at weddings and funerals. The ability a pigeon has to return home from a strange location necessitates two sorts of information. The first, called "map sense" is their geographic location. The second, "compass sense" is the bearing they need to fly from their new location in order to reach their home. Both of these senses, however, respond to a number of different cues in different situations. The most popular conception of how pigeons are able to do this is that they are able to sense the Earth's magnetic field with tiny magnetic tissues in their head...
Chameleon These species come in a range of colors, and many species have the ability to change color. Some chameleon species are able to change their skin colouration. Different chameleon species are able to vary their colouration and pattern through combinations of pink, blue, red, orange, green, black, brown, light blue, yellow, turquoise, and purple. Chameleon skin has a superficial layer which contains pigments, and under the layer are cells with guanine crystals. Chameleons change colour by changing the space between the guanine crystals, which changes the wavelength of light reflected off the crystals which changes the colour of the skin. Colour change in chameleons has functions in camouflage, but most commonly in social signaling and in reactions to temperature and other conditions. The relative importance of these functions varies with the circumstances, as well as the species. Colour change signals a chameleon's physiological condition and intentions to other chameleo...
Many types of photography captures exactly what the camera sees, but that isn’t the case with the composite approach. It features dozens, if not hundreds, of photographs in a single image. The individual photos are shot and then digitally patched together into a believable scene. If you’ve got Photoshop, you too can make your own composite image. Learn how in the online class called Compositing in Photoshop From Start to Finish.
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Thank you for interest