International Science Community Association International Research Journal of Environmental Sciences 2319-1414 8 4 2019 10 22 Assessment of native and migrant bird species in a riverine ecosystem of India 21 27 EN Henri Kpèdékpo AKOGBETO 1 International Chair in Mathematical Physics and Applications (ICMPA), Faculty of Sciences and Technologies (FAST), University Abomey-Calavi, 072 P.O.Box 50, Cotonou, Benin and Unité de Recherche sur les Zones Humides, Département de Zoologie, Faculté des Sciences et Techniques, Université d′Abomey-Calavi, 01BP526 Cotonou, Bénin Emile Didier FIOGBE 2 Unité de Recherche sur les Zones Humides, Département de Zoologie, Faculté des Sciences et Techniques, Université d′Abomey-Calavi, 01BP526 Cotonou, Bénin N.N. Punchihewa 1 Department of Zoology, The Open University of Sri Lanka, Nawala, Nugegoda, Sri Lanka E.M.D Tharangani 2 Department of Zoology, The Open University of Sri Lanka, Nawala, Nugegoda, Sri Lanka Nandagopal P. 1 Department of Environmental Science, Bangalore University, Jnanabharathi Campus, Bengaluru-560056, India Harish R. Bhat 2 Centre for Ecological Sciences, Indian Institute of Science, Bengaluru-560012, India > Research Paper 2019 1 14 2019 10 22 The present study aims to classify the native and migrant bird species recorded during the summer season in Ranganathittu Bird Sanctuary of Karnataka State. Bird survey was conducted during the summer season in the month of March, April and May inside Ranganathittu Bird Sanctuary (RBS), located on the bank of river Cauvery. Readings were recorded on every weekend, during Saturday and Sunday of the summer season. The birds were recorded during morning from 06:00AM to09:00 AM, and at the evening from 04:00 PM to 06:00 PM using belt transect method. Birds were classified into native and migrant species based on direct observations. Although RBS is having a specific percentage of nested native bird species, there was almost a significant percentage of migrant bird species were recorded during the study. Total numbers of 2890 birds were recorded during the study which belongs to 84 different species and majority of them were native and relatively good percentage of migrant species were observed. More number of aquatic birds was recorded from the migrant bird species group. The study revealed that relatively good percentage of migratory bird species nests in RBS during summer season. Birds require explicit natural assets for generation and for different exercises for their survival. Among both transient and local or non-transitory species alike, satisfactory nourishment for the youthful has all the earmarks of being essential in figuring out where, just as when, a species will breed. Also, study shows that RBS is a preferred habitat for migratory birds during summer season. Copyright@ International Science Community Association