-
How does the laser work?
- What bird species is the Dissuader most effective on?
- Does
the Dissuader work on Pigeons, Starlings, Sparrows or Grackles?
- How large an area will the Dissuader effectively cover?
- How long does it take to scare the birds away?
- Does it work during the day?
- How long does the battery last, and is it a
regular 9 volt battery?
The birds are
frightened of the reflected "spot" the
laser makes on the grass, leaves, water, or other
birds. When they see that spot near them they fly
away. The laser "spot" does not need to
touch the birds to be effective.
It is highly
effective on most aquatic, wading, and night flying
birds. This would include Geese, Ducks, Gulls,
Egrets, Herons, Cranes, Plovers, Ibis, Cormorants,
Stilts, Crows, Ravens, Mynas, and Vultures.
Yes, but with
limitations - the Dissuader will only be effective
indoors, or outdoors at night on small flocks that
are roosting (2,000 birds or less) - it is not
effective outdoors during the day at all on these
birds.
The lasers' best use for these bird species would be
in the same manner that Wal-Mart uses the Dissuader
to clear their stores and distribution
warehouses:
The birds perch/roost on the overhead beams above
the lights; meaning that the ambient light levels
are fairly low. The lasers (they use a minimum of
two) are then used to "herd" the birds out
doors or into capture nets where they are captured
and carried outside.
This approach allows everyone to work from the
ground and allows a large area to be cleared in
about one hour.
Field use has
demonstrated reliable effectiveness of 1/2 mile.
Greater distances (up to 1 mile) have been
accomplished under favorable conditions (e.g. rural
setting with very little ambient light, no fog, and
less than a full moon)
That depends on
how large an area the birds are roosting in and how
many birds there are, but not long. Allow an hour on
your first night with most of that spent
investigating whether the roost is clear.
Generally no, we
have found two species, Herons and Egrets who are
highly affected during the day, but most other
species will ignore the laser in bright daylight
conditions. It is generally effective, however, on
overcast, cloudy days. Rule of thumb for
effectiveness is - if you can see the reflection of
the beam spot off the grass/leaves/water - so can
the birds and it will be effective.
It is also important to add that, often it is most
desirable to chase birds away from their roost at
night because that is where the birds feel most safe
and protected. Denying them that safety usually
means they won't be around to eat or loaf during the
day - this is especially true with Canada Geese.
The battery lasts
about 30 days in normal use (20 to 30 min of use
"trigger depressed" per day) and is a
regular alkaline 9 volt battery. We have designed in
very efficient usage of power.
