As per research article published by Alfonso Balmori1 and Örjan Hallberg on the Urban Decline of the House Sparrow (Passer domesticus): A Possible Link with Electromagnetic Radiation based on study done in Spain suggest that electromagnetic signals are associated with the observed decline in the sparrow population. The paper was published in Informa Healthcare. In the results of the paper they say 'We conclude that electromagnetic pollution may be responsible, either by itself or in combination with other factors, for the observed decline of the species in European cities during recent years. The appearently strong dependence between bird density and field strength according to this work could be used for a more controlled study to test the hypothesis'. Bhopal which has number of mobile companies with their expanding tower networks, will be impacting house sparrows.
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