Nijabima Harasara award 2011 – Uva Provincial Council
2012
Felicitation Award, Institute of Biology 2012 in recognition of the “Outstanding contributions in the fields of Ornithology and Conservation Biology”
2011
National Exemplary Citizens Award (One out of 41) 2011. Government of Sri Lanka
2003, 2004, 2005.2006, 2007, 2009, 2010
Presidential Awards for Research National Research Council, Presidential secretariat.
2007
"Desha Mamya Parisara vedi Samaja Daja Deshamanya" - National Award, Government of Sri Lanka
2005
“Sabaragamuwa Sarasavi Keerthi Sri” awarded by University of Sabaragamuwa for services rendered to the enhancement of Natural Science Education in Sri Lanka
2005
President’s Environment Award, 2004 for Excellent Service Rendered in the ‘Outstanding Contribution’ Sector
2003
Member, Scientific Panel on Environment – The Permanent Court of Arbitration, The Hague, Netherlands
2003
Special Achievement Felicitation Award for “Taking science education to the people”, Sri Lanka Association for Advancement of Science
2003
The Society for Conservation Biology, “DISTINGUISHED ACHIEVEMENTS AWARD FOR EXTRAORDINARY SERVICE IN CONTRIBUTING TO ENVIRONMENTAL REFORM AND EDUCATION”
2001
Certificate of Appreciation, INTERNATIONAL YEAR OF VOLUNTEERS 2001 – GEF/ UNDP/ UNV.
1993
Sri Lanka Association for the Advancement of Science, Environment Committee Award for 1993 “OUTSTANDING CONTRIBUTION TO ENVIRONMENTAL PROTECTION”