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S K Banerjee - Rites Flat, ashok Vihar Phase-3 Ashok Vihar III New Delhi Delhi

From 2004 I started to live in RITES quarters, at Ashok Vihar Phase-3, Delhi 110052. The colony is surrounded by big park and gardens (500m X 1000m) from all side. Fourtunately I had a lawn attached with my flat filled with grass and shurbs. And in 2004-2006 I found lots of sparrows is roaming there through out the day specially at morning. However with time I noticed the numbers of sparrows are reducing at faster rate. Although I heard that due to mobile tower radition the number of sparrow is decearsing, but since my residence was surrounded by huge gardens the mobile signal strength was low. I tried to find out the reason and noticed that crows are preying sparrows. I found that there is a relation between increase of crows (due to day by day poor cleaning of municipal garbage from surrounding area)with decrease in numbers of sparrow comeing to my lawn. However in 2008-2009 with huge increase in crow in the area I found the numbers of sparrow very negligible. Hence in my opinion increase in population of crows in uncleaed city has major role in decrease in sparrow population. Hence to save the sparrow the proper disposal of garbage is extremely required.