According to sources, this is a pre-measure census taken up ahead of the integrated census done by NTCA. The pre-monsoon survey is usually carried out between June and July, while the post-monsoon survey will be held in December– January, when top scientists will be roped in. The census will monitor tiger signs, co-predators, pug marks, movement of large herbivores, tree bark peelings and direct sightings of all protected wildlife animals.