Important sampling notes
It is important to point out that most CV observations were made when
the species were perched (rare behavior in reproductive sites), in
copulation or oviposition, thus detectable with the naked eye. In these
cases, it was not necessary to use HSV as the individual was already
recorded with CV. HSV was typically used when individuals were in flight
and nearly impossible to identify with the naked eye. Thus, observations
acquired with CV and HSV cover different behaviors and rarely overlap.
If an individual was observed with both CV and HSV on the same day, the
HSV observation was discarded since it was then data that could have
been obtained with CV. Instead of comparing CV with HSV, we are
interested here in assessing how HSV can supplement data that could not
be observed with CV and how this potential increase in the resolution of
data improves demographic estimates. To accomplish this goal, we compare
CV with CV+HSV.