The behaviour of the crazy ant visible on the surface
of the ground was observed at irregular times
throughout the day by counting the maximum
number of workers foraging on the surface at
any one time in a 1-min observation period.
Observations were made between 11:00 and 13:00 h
in each grid square. In one grid square (point A),
these observations were repeated hourly from 6:00
to 18:00 h. In each case, the square was observed
from a distance of 2 m, where possible from a rock
or area of open ground, to minimise disturbance to
the ants. Night-time observations required close
approach to the ants and disturbance could not
be prevented, thus reliable comparative night-time
observations could not be obtained.