PLEASE HELP THE VULTURE IN THE TRIVANDRUM ZOO KERALA

Sir,
      When i visited the  trivandrum zoo, kerala india , I found that many animals are kept alone in a cage, especially zebra,giraffe,tiger, lion etc. Among this i found a poor vulture which has been kept in a small cage for years, Since vutlure is a bird used to fly and live in herd kepping it in a cage alone for years is a cruelty. Please either move this vulture to a big place and give a partner to it .Please stop keeping animals living in herds alone.
                                                    Thankyou.