Before the visit by the WWF-India team, the authorities were claiming that the number of tigers in this sanctuary is around 15.What's more, they are of the view that winter was not the right time to count the tigers. During the summer months, when there are only a few water sources in the forest, tiger-tracking and identifying their pug marks become easy, they say, adding that this forest is one of their natural habitats as plenty of food is available for them here.Some experts say that during winter, the tigers move away from their natural territory and would return only in summer. The authorities are toying with the idea of bringing a couple of tigers from the Ranthambore Tiger sanctuary if no tigers were found in Sariska during the census in May.Meanwhile, a central team, which was to visit Sariska on Tuesday, has postponed its programme. The team would now arrive in the sanctuary on February27. The centre had decided to sent a team, following the report of WWF-India team which expressed concern on the decline in the tiger population in this sanctuary.