"He's a very clever bird," Tanwar said.
The stork managed to elude them until finally giving in to his captors Wednesday morning.
Just days ago, Prime Minister Narendra Modi began a high-profile effort to eliminate single-use plastic by 2022, as well as an immediate ban on its use in Delhi.
The bird will be released into the wild as soon as officials at the Sultanpur National Park and bird sanctuary deem it fit.
The ring easily slid off the exhausted stork's beak, Tanwar said.