DN Choudhary and Jay Kumar Jay

Birds are environmentally beneficial creatures that play a crucial role in maintaining ecological balance by acting as key participants in various food chains. This study was carried out in three potential wetlands and its adjoining areas in district Bhagalpur, Bihar from January, 2023 to May, 2025. The main objective of this present work was to investigate the impact of climate change on the migratory behavior of some birds. Altogether forty two species of migratory birds were recorded during this investigation. The observation clearly revealed a significant decline in the number of various migratory species, along with the signs of untimely or irregular migratory patterns in comparison to previous years. Certain migratory birds such as the Osprey, Black tailed godwit, Brown headed Gull, Brahminy duck, Northern pintail, Green shank, Eurasian curlew, Common Sandpiper, Common teal, Great crested grebe, Grey headed lapwing, Gadwal and Pied avovcet exhibited significant changes in their usual migration behavior. Some of these bird species such as Osprey, Black tailed godwit, Green shank, Eurasian Curlew, Common Sandpiper, Common Teal and and Pied avovcet showed prolonged stay or late departure where as early migration (arrival) was recorded in Northern pintail, Brahminy duck, Gadwall, Grey headed lapwing, Great crested grebe and Brown headed Gull. The sudden decline in their population and the alteration in their migratory patterns may be attributed to either rapid rise in atmospheric temperature and less rainfall or may be due to sudden atmospheric changes. These obsevations will be helpful for the researchers and academicians and has contribution to the conservation of birds and their habitats.

DOI: 10.22271/23940522.2025.v12.i5b.1137

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