August 15th, 2008 | 
Author: 
Established in 1875, and spread over nearly 100 acres in the heart of Kolkata are the Zoological Gardens. Inaugurated by the Prince of Wales in 1876, it is one of the oldest and the largest Zoos of India.
During the winter season, the migratory birds flock in the zoo for its artificial lake and vegetation. But in recent times the birds do not flock so much as the yester years due to ecological imbalances.
The zoo displays a large number of crowd-pulling megafauna, including the Royal Bengal Tiger, African Lion, Jaguar, Hippopotamus, Great Indian One-horned 
Rhinoceros, Reticulated Giraffe, Grant’s Zebra, Emu, Dromedary Camel and Indian
Elephant. Previously, other megafauna like the Panthera hybrids and the Giant Eland were present.
The zoo sported a large collection of attractive birds, including some threatened species up until the 1980s – large parrots including a number of Macaw species, Conures, lories and lorikeets; other large birds like Touracos and Hornbills; colourful game birds like the Golden Pheasant, Lady Amherst’s Pheasant and Swinhoe’s Pheasant and some large flightless birds like the Emu, Cassowary and Ostrich. However, lack of pairing and exchange programs have caused a significant decline in the populations, causing some of the populations to die out.
Posted in Kolkata