Friday, September 19, 2008

Pigeons can be used to measure pollution

According to the studies conducted by the researcher of the University of Rajasthan in northern India,pigeons in Jaipur city shows that these birds can be used to measure city pollution."Heavy metals present in the environment of the habitat enter the feathers, and remain ever after the feathers are shed"explains New Delhi's Gobar Times,a supplement to Down to Earth magazines.Since pigeons normally live in fixed area, the levels of cadmium,chromium,copper, and lead detected in their feathers may be an accurate indicator of local pollution.