Simply Filipina

I've learned that a studies conducted on pigeons in Jaipur city show that these birds can be used to measure city pollution, how nice is that because pollution are everywhere. That's say by the researchers at the University of Rajasthan, northern India. Heavy metals present in the environment of the habitat enter the feathers and remain even after (the feathers) are shed. explains by new Delhi's Gobar Times, a supplement to Down to Earth magazine. Since pigeons normally live in a fixed area, the levels of cadmium, chromium, copper and lead detected in their feathers may be an accurate indicator of local pollution. So whenever you see pigeons you know whats their deal to our environment.