Government Issues Final Notification on Eco Sensitive Zone Around Okhla Bird Sanctuary The final notification declaring Eco Sensitive Zone (ESZ) around Okhla bird sanctuary has been issued by Government of India in the Gazette of India vide S/o-2262 (E) dated 19th August 2015. The final notification has been issued after following due procedure of law. The draft notification was issued under S/o-2499 (E) dated 24th September 2014.