Tiger Tiger burning bright ...
in the forest of the night , but not so many by now .
Poachers in India's National Parks and wildlife preserves have been active killing in protected places for the last few years .
Sariska may not have tigers anymore ...
Ranthambore National Park found 122 tigers killed between 1999 -2003 ,
with an added 62 tigers dying because of 'unnatural causes'.
Trad Chinese medicine still uses all parts of tiger and stokes the killing .
The Indian Gov says an estimated 3,600 tigers are left , but that number is bitterly disputed by environmental groups .
Humans have to cool out on killing big cats