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File:Gorilla tool use.png

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Gorilla gorilla gorilla

English: A first time for everything: This adult female Western lowland gorilla in Nouabalé-Ndoki National Park, northern Congo, uses a branch as a walking stick to gauge the water's depth, proving that gorillas use tools too.
From the magazine: as part of an ongoing study of western gorillas in Nouabalé-Ndoki National Park in the Republic of Congo, Thomas Breuer, Mireille Ndoundou-Hockemba, and Vicki Fishlock reveal that gorillas are just as resourceful as the other great apes. From an observation platform at Mbeli Bai, a swampy forest clearing that gorillas frequently visit to forage, Breuer et al. observed an adult female gorilla named Leah (a member of a long-studied gorilla group) at the edge of a pool of water, “looking intently at the water in front of her.” Leah walked upright into the water, but stopped and returned to the edge when the water reached her waist. She then walked back into the water, grabbed a branch in front of her, detached it, and, grasping it firmly, repeatedly jabbed the water in front of her with the end of the branch, “apparently using it to test the water depth or substrate stability.” She continued walking across the pool, branch in hand, “using it as a walking stick for postural support.”
Afrikaans: 'n Volwasse wyfie van die Westelike laelandgorilla in die Nasionale Nouabalé-Ndoki-wildpark in die noorde van die Republiek van die Kongo. Sy gebruik 'n afgebreekte stok as 'n kierie waarmee sy ook die waterdiepte peil, en sodoende aandui dat gorillas ook implemente behendig kan aanwend.
Hierdie studie deur Thomas Breuer, Mireille Ndoundou-Hockemba en Vicki Fishlock het onthul dat gorillas net so vindingryk as ander grootape kan wees. "Leah", 'n lid van 'n gorillagroep wat lank reeds waargeneem word, het die oewer van 'n waterpoel in die Mbeli-bai genader. Sy het opmerksaam na die water voor haar gestaar, dit regop binnegestap, maar na die oewer teruggedraai toe sy tot aan haar middel in die water was. Sy het die water weer binnegestap, 'n tak voor haar gegryp en dit afgebreek. Stewig in die hand het sy dit 'n paar keer in die water voor haar gesteek, blykbaar om die waterdiepte en stabiliteit van die substraat te toets. Sy het die poel met die tak in die hand oorgesteek, en dit soos 'n wandelstaf as 'n stut aangewend.
Date Published: October 1, 2005
Source Wild Gorillas Handy with a Stick. PLoS Biology Vol. 3/11/2005, e385 doi:10.1371/journal.pbio.0030385
Français : Gorille utilisant un bâton pour sonder la profondeur d'un cours d'eau.
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current17:49, 4 December 2006Thumbnail for version as of 17:49, 4 December 20061,370 × 916 (2.11 MB)Ayacop{{Information |Description='''A first time for everything:''' This adult female gorilla in Nouabalé-Ndoki National Park, northern Congo, uses a branch as a walking stick to gauge the water's depth, proving that gorillas use tools too. From the magazine:

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