LUCKNOW/GORAKHPUR, May 21 -- All zoos in Uttar Pradesh, along with the Etawah Lion Safari, will remain closed for visitors till May 27 as a precautionary measure to ensure that all protocols for H5 avian influenza are followed for the safety of birds and animals, said forest minister Arun K Saxena on Tuesday. Gorakhpur, Lucknow and Kanpur zoos were already shut till May 20 in wake of bird flu deaths but the closure has now been extended. "The closure of zoos is precautionary, and to ensure all protocols for H5 avian influenza are followed for safety of birds and animals," said Saxena. The closure of the Shaheed Ashfaq Ullah Khan Zoological Park in Gorakhpur may be extended further said officials. A public notice regarding the indefinite closure has been posted at the zoo entrance. So far, deaths of Tiger 'Keshri', aged over seven years, on March 30, followed by that of a leopard on April 7, Tigress 'Shakti' on May 8, Lion 'Pataudi' on May 15, and a peacock have been confirmed due to bird flu in Gorakhpur and Kanpur zoos....