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In the summer of 1995, a new type of tool using
behavior was observed, performed by individual chimpanzees of
the Bossou community (Matsuzawa et al, 1996). The chimpanzees
were observed using a wand to scoop floating algae (Spirogyra
sp.) off the surface of ponds, a behavior which was later defined
as algae scooping. At the vicinity of the ponds, large amounts
of stalky and fern vegetation are usually available. The chimpanzee
selects a stalk which it broke off with its teeth. It is then
fashion a fishing "rod" devoid of leaves. The tool is
then inserted into the water and a scooping action of the wrist
usually follows to fish out the surface algae. The stick is then
brought up to the mouth and the algae eaten.

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