According to the website the best time to visit is "Mar-May or Sep-Nov when the weather is favorable"

For more info check this -
http://hpchamba.nic.in/Sanctuaries.htm

The dfo's email address is dfocha-hp@nic.in. Current DFO is Ms. Sarita.
Contact no. 01899-222639

Also ,in case anyone is visiting , you need to call the DFO's office a couple of days before hand for booking your stay at the forest rest house ( the one in the pic is the main VIP hut -there are 2 more).

Sabyasachi, I cant believe that I saw a fox and some goral apart from some astonishing birds and yet have no photograph . The sightings were usually so short or sudden that I either did not have my camera on me or was not prepared. As for the birds I wonder how you guys manage to take shots of these things while they are up on a tree?! They are usually so far out of reach!