During the present study 84 groups of rhesus monkeys were identified and a total of 4051
monkeys were estimated from different localities. If we compare the total population of
rhesus monkey in Aligarh district from 1959, it increased 12 times (from 337 individuals to
4051 individuals), whereas, due to limitation in habitat expansion, number of groups
increased only upto 4.9 times (from 17 groups to 84 groups).