Good question. Sometimes they can just attach
a silk thread (the silk that they make) to one
side and jump to the other. What they do if they
cant jump that far is like what mountain climbers
do if they need to move across a rock face and
there arent enough handholds and footholds in
between; they attach the silk to one side, then
go down and in the opposite direction as far as
they need to. This makes them like a pendulum in
an old clock. When they let go, they will swing
to the other side.
Why do you think so
many spiders build webs across trails?
Thanks for asking,
There are basically three ways:
1. - It can
find a place far overhead, extend down from that
and swing from one place, attach the web strand,
and then swing to another place and attach the web
strand to that. It then uses the connection as the
base to construct it's web.
2. - If it is not
too big a spider, it can send a swatch of webbing
into the air, and let it balloon (drift on the
wind) to another location and attach its web stand
it was carrying behind to that. This is the
technique that baby spiders use.
3. - The most
common method, is that it attaches the end of the
strand to one high place, climbs down trailing and
extending the strand behind it, walks along the
ground to another high place, climbs up high, and
attaches the strand up there. It pulls up the
slack, then this long strand acts like a bridge,
and is often used as the first line to construct
its web from.
A Jumping Spider can jump,
with a web strand trailing behind, but not a
distance of 12 or 20 feet, in fact not much more
than 3 or 4 inches.
I just read about how spiders construct webs
between 2 distant points, last week in a great
book called "The Way Life Works".
spider spins some silk out of its back end, and
the silk waves in the breeze until it sticks on
some other place. Then the spider attaches the
silk to the place where she is sitting, and she
has a strand of silk that she can walk back and
forth along, to spin more silk at different places.
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