When carrying out that technique you must think of several considerations:
-- The population does not change between the two capture times. There should be very few or no birth sot deaths, emigration or immigration.
-- The marking should not make the marked animals more susceptible to predators or harm the animals.
-- The marking should not rub off or be lost.
-- Sufficient time should be left for the released, marked individuals to fully disperse equally thought the rest of the population.