Population Status Studies and Anthropogenic Impact on Birds of Biratnagar Sub-Metropolis

Birds have always fascinated man by their exquisite coloration. They have their functional role in the ecosystem as potential pollinators and scavengers, indeed rightly called bioindicators. Nepal being a mega diversity centre harbors more than 873 species of birds which amounts to 10 % of the world. Recently with increase consciousness for biodiversity census and monitoring, many new species have been added to the list. The subtropical climate and greenery of Biratnagar sub-metropolis provide good habitat for several bird species but in the past three decades drastic changes have taken place in the environment of this place because of anthropogenic activities and climate change. Several commonly visible birds ’ species have left to turn out. Habitats of birds have shrunk here in such a way that very limited species of birds have become successful to show their representatives in this situation. Considering gradual loss of habitats because of increasing anthropogenic impacts and climate change, an attempt was made to study the present bird status of Biratnagar- sub metropolis. In twelve months of regular observation, eighty-one species of birds belonging to thirty-three families were recorded. Frequency of bird was counted by line transec