June 2009 Design S.P.Vijayakumar
PhD student
My current research interests include behavioral and
community ecology with a focus on tropical bird species.
Research: (current and past research)
Past research (2004-2006): During my Master’s (Wildlife Science) at Wildlife Institute of India, I
carried out a project examining the effects of habitat degradation on mixed-species bird flocks in a
fragmented rainforest landscape in the Anaimalai hills of the Western Ghats. Before and after my
master’s, I worked in the same landscape on projects examining human-elephant conflict and mammal
use of rainforest fragments, with Nature Conservation Foundation.
Current research (2006-till date): I joined the PhD programme at CES, IISc in July 2006. My PhD
thesis focuses on mixed-species bird flocks in terrestrial habitats. Using a combination of quantitative
syntheses and primary field data collection I’m trying to find out what drives birds to participate in
these flocks and whether there are rules which govern their assembly.
Peer-reviewed journal articles
      Goodale , E., Nizam, B.Z., Robin, V.V., Sridhar, H., Trivedi, P., Kotagama, S.W., Padmalal,
U.K.G.K., Perera, R., Pramod, P. & Vijayan, L. (in press). Regional variation in the
composition and structure of mixed-species bird flocks in the Western Ghats and Sri Lanka.
Current Science.
      Sridhar, H., Beauchamp, G. & Shanker, K. (2009). Why do birds participate in mixed-species
foraging flocks? A large-scale synthesis. Animal Behaviour 78:337-347
      Sridhar, H. & Sankar, K. 2008. Effects of habitat degradation on mixed-species bird flocks in
Indian rain forests. Journal of Tropical Ecology 24:134-147.
      Sridhar, H., Raman, T. R. S. & Mudappa, D. 2008. Mammal persistence and abundance in
tropical rainforest remnants in the southern Western Ghats, India. Current Science 94:748-
      Sridhar, H. 2007. Participation by Black Baza Aviceda leuphotes in mixed-species bird flocks
in rainforests in the Anamalai hills, Western Ghats, India. Indian Birds 3:26-28.
Conference /seminar proceedings
      Sridhar, H. 2008. Leaders and followers in mixed-species bird flock. 1st Annual Student Meet
on Ecology, Evolution, and Conservation Science (SMEECS) at National Centre for
Biological Sciences (NCBS), Bangalore.
      Sridhar, H. 2007. Mixed-species bird flocks in rainforest fragments: species pool, habitat
structure and area effects. 1st conference of the Asian chapter of the Association for Tropical
Biology (ATB) at Mahabalipuram, Chennai
      Sridhar, H. 2006. Effects of rainforest fragmentation and degradation on Indian giant squirrel
(Ratufa indica) and other arboreal mammals in the Anamalai hills, southern Western Ghats,
India. Proceedings of the 4th International Tree squirrel and 1st International Flying Squirrel
      Kumar M.A., Sridhar H., Mudappa D., Raman T. R. S., Madhusudan M.D. 2003. Correlates of
use of rainforest fragments and the surrounding habitat matrix by wild Asian elephants
(Elephas maximus) in a plantation landscape. Symposium on “Human-Elephant Relationships
and Conflicts” organized by the International Elephant Foundation (IEF) and the Biodiversity
and Elephant Conservation Trust (BECT)
      Kumar M.A., Mudappa D., Raman T.R.S, Sridhar H., Madhusudan M.D. 2003. Human-
elephant conflict in a landscape mosaic in the Anamalai hills, Western Ghats, India.
Symposium on “Human-Elephant Relationships and Conflicts” organized by the International
Elephant Foundation (IEF) and the Biodiversity and Elephant Conservation Trust (BECT)
      Talwar M., Zacharias M., Gowda V., Kapoor V., Sarasij R., Sridhar H., Lokhandhwala Z.,
Borges R.M. 2001. Understanding ant-avoidance behaviours in the myrmecomorphic spider
(Myrmarachne plataleoides), mimic of the weaver ant Oecophylla smaragdina. Proceedings
of the International Conference on Tropical Ecosystems: Structure, Diversity, and Human
Welfare, Oxford and IBH publishing co. ltd.pp 649 - 653.
      Popular articles
      Sridhar, H. 2008. Eating with the enemy. Sanctuary Asia 28 (4):46-51