The concept of zoos has undergone a sea change in the past couple of decades. Zoos are no longer meant to serve as showpieces, exhibiting wildlife in confinement. Rather, these are supposed to serve long-term needs of conservation by facilitating research on diverse aspects of wildlife and their management.
Links:
[1] http://admin.indiaenvironmentportal.org.in/news/zoo-revamp-editorial
[2] http://admin.indiaenvironmentportal.org.in/category/newspaper/assam-tribune-guwahati
[3] http://admin.indiaenvironmentportal.org.in/category/thesaurus/zoos
[4] http://admin.indiaenvironmentportal.org.in/category/thesaurus/wildlife-management
[5] http://admin.indiaenvironmentportal.org.in/category/thesaurus/assam
[6] http://admin.indiaenvironmentportal.org.in/category/thesaurus/guwahati
[7] http://admin.indiaenvironmentportal.org.in/category/thesaurus/sustainable-development