At least four nilgais have died in the Marchazar Zoo within a week apparently due to cold weather as the officials concerned did not construct huts to keep the animals warm at night.
Links:
[1] http://admin.indiaenvironmentportal.org.in/news/marghazar-zoo-loses-four-nilgais-week
[2] http://admin.indiaenvironmentportal.org.in/category/newspaper/dawn-pakistan
[3] http://admin.indiaenvironmentportal.org.in/category/thesaurus/pakistan
[4] http://admin.indiaenvironmentportal.org.in/category/thesaurus/wildlife
[5] http://admin.indiaenvironmentportal.org.in/category/thesaurus/cold-wave