Vashishat, NishaNavjot Kaur2019-07-222019-07-222019http://krishikosh.egranth.ac.in/handle/1/5810115960Birds are one of the most diverse and evolutionary successful groups which occupy almost every habitat on earth. Birds act asbiological indicator of an environment because of their tiny head with thin cranium, non-conducting plumages, high mobility and practice of inhabiting zones having high electromagnetic field. The present study deals with the impact of electromagnetic radiations emitted from cell phone tower on diversity and breeding biology of birds at two locations; location 1- Punjab Agricultural University (PAU), Ludhiana and location 2- village Baude, Moga. Three sites each with cell phone tower in the centre were selected at two locations and one site without any cell phone tower was selected as control site. The bird diversity was recorded within 200 m radius of cell phone tower and artificial nest boxes were installed to study the breeding biology of birds at selected sites. The maximum bird diversity was recorded at site II (17 bird species) of location 1 than the control site (12 bird species). In spite of the presence of cell phone tower there was significant difference amongst the bird diversity at site II and other selected sites under study which showed minimal effect of electromagnetic radiations on the avian diversity.This may be because the birds observed during the present study were not restricted to this area only and therefore were not under the continuous exposure of electromagnetic radiations. Common Myna occupied artificial nests at all the four selected sites under location 1 (PAU). Common Myna and House Sparrow occupied the artificial nest boxes for breeding at selected sites of location 2. The breeding success of Common Myna was ranging from 50-100% at control sites and 50-75% at sites having cell phone towers. House sparrows occupied 10-40% nests at sites of village Baude but further egg laying was not seen in these occupied nests. This may be attributed to the impact of continuous exposure of these birds to EMR (electromagnetic magnetic radiations) during the breeding season.ennullThesis