They erect contrivances for scaring away
the birds; they stick bamboos about eight feet in length upright in
the ground every 20 to 30 yards. Between the upper ends of these,
rattans are tied, connecting together all the bamboos on each area
of about one acre. The field of one roomhold is generally about four
acres in extent; there will thus be four groups of bamboos, each
of which can be agitated by pulling on a single rattan. From each
such group a rattan passes to the hut, and some person, generally a
woman or child, is told off to tug at these rattans in turn at short
intervals. Upon the rattans between the bamboos are hung various
articles calculated to make a noise or to flap to and fro when the
system is set in motion. Sometimes the rattan by which the system of
poles is set in movement is tied to the upper end of a tall sapling,
one end of which is thrust deeply into the mud of the floor of the
river. The current then keeps the sapling and with it the system of
bamboos swaying and jerking to and fro. The Kayans admit that they have
learnt this last "dodge" from the Klemantans. The watcher remains in
the hut all day long, while his companions are at work in the field;
he varies the monotony of his task by shouting and beating with a pair
of mallets on a hollow wooden cylinder.
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