"The unique identity numbers have been allotted to every rhino after preparing a complete data base and collecting the distinctive feature of each rhino," field director DTR Shailesh Prasad said.
Dudhwa has 28 rhinos in rhino rehabilitation area (RRA) which include six calves, seven male and 15 female.
"This is for the first time in India that unique identity numbers have been allocated to the animals," Prasad said.
He said with the unique identity numbers, the patrolling teams would be enabled to keep a close watch over the movements of every rhino with no confusion about their identities.
"Similar exercise to allot unique identity numbers to Dudhwa tigers is in the pipeline," the field director said.
He said that data base of the tigers has been prepared through camera trapping, scate analysis and physical observation and now proposal has been sent for the approval to the government.
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Rhino rehabilitation programme in Dudhwa is world's most successful programme of relocation of rhinos.
The programme in Dudhwa was started in 1987 with just 5 rhinos but the rich flora and fauna and highly adaptable Dudhwa habitat has helped rhinos to grow in numbers.
The population of rhinos in Dudhwa has shot to 28 at present.