Third, behavioural ecologists may use
reintroductions to study newly founded
populations in which the origin of each
individual is known. They can be aged,
sexed and individually identified by genetic
methods of fingerprinting, which allow,
for example, studies of mating strategies.
Morton43 planned experimental introductions
of wrens (Cyphorhinus phaeocephalus
and Henicorhina leucosticta) to study the
settlement abilities, habitat selection and
vital requirements of these species at an
individual level.