Officials should complete all the projects related to the development of the zoo within a stipulated time-frame and money will not be a constraint, Modi said at an event at the zoo on the occasion of World Rhino Day today.
Modi, who also holds the Finance, Commercial Taxes, Environment and Forest portfolios, stressed the need to make the Patna zoo a cleaner place as part of Prime Minister Narendra Modi's "Swachhta Abhiyan".
People visiting the zoo will also be given guide maps apart from folders containing information regarding the animals, he said.
Prominent display boards would be put up before the cages besides making the zoo website more attractive, Modi said.
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The officials have been directed to get the feedback form filled up by the visitors, he said.
A toy train for children and a trackless train for others will soon be started at the zoo, he said.
Laying the the foundation stone for setting up a "Rhino Conservation Breeding Facility" at the zoo, the deputy chief minister said, the aim was to promote breeding of one-horned rhinos at the zoo.
The breeding facility will be developed at a cost of Rs 3.89 crore and spread over 2.5 acres of land in Patna zoo, official sources said.
The number of rhinos at the zoo was the highest in the country with 12 rhinos at present, he said.
"Adopting animal is the best way through which one can show his/her love towards wild animals," Modi said.