Mangalavanam  Bird Sanctuary, Kochi, regarded  as  the green  lung  of  the  area, is  an  ecologically  sensitive area  which is home  to  a large  variety of  migratory  birds as  well  as  different  types  of  mangroves. 50 members  of  the Nature Club  visited  the  sanctuary  on 31-10-2016 and  were enriched  by  a session  taken by  Sri  Varghese ( Rtd DFO)  about  the  diminishing mangrove  forests  and effects  of  this  on  climate  change. The  number  of  migratory  birds  had  also  sadly  decreased  over  the  years.