 By now, more than 50 species of butterflies have already been observed in the park.A rainwater lake is the centre of attraction at Allen Forest, and visitors can see hundreds of deer grazing in open savannah-like land without fear of any predator.A total of 741 birds were spotted in the lake area which belonged to staggering 44 different species including Pied Kingfisher, orange headed thrush, painted storks, little egret, great cormorant, open bill stork, black headed ibis, waterhen, whistling teal, grey hornbill to name a few.