Drawing Bernd
(145.7MB, 00:01:05)撮影日：2010/07/13
撮影場所：Rheine Zoo Germany
Elisabetta Palagi
2022/11/04登録
種類：Theropithecus gelada
キーワード：drawing play stone handling geladas creativity
動物界 >脊索動物門 >哺乳綱 >霊長目 >オナガザル科 >ゲラダヒヒ属 >
- 00:00-00:05 Bernd sits on a ledge of the cliff, holding a white stone in his left hand, and is slowly rolling it on a surface above him while looking at the ground
- 00:05-00:13 He holds the stone with both hands and rubs it on the surface of the cliff. The surface is slightly sloped and the movements are up to down. His eyes are focused on the movement of his hands and the stone. Clear white signs are left on the surface being rubbed. He sits most of the time but also walks backwards while rubbing the stone downwards.
- 00:13-00:15 He rolls the stone with both hands on the surface close to his body, eyes focused on the movement of his hands.
- 00:15-00:18 He walks towards another ledge on the cliff to the left, holding the stone in his right hand and walking on it.
- 00:18-00:29 He sits and starts to rub and roll the stone on the surface of another stone on the cliff at his eye level:
- 00:19-00:21 He rubs the stone with both hands looking at the movement
- 00:21-00:24 He rolls the stone with the left hand while touching his face the right hand, he does not look at the movement of the stone
- 00:24-00:29 He holds the stone with the right hand and rub it on the surface of the cliff, looking down at the group and touching his face with the left hand.
- 00:29-00:35 He moves the stone from the upper surface to the surface where he sits and starts to roll the stone on it with the right hand. He looks at the group, displaying threatening facial expressions (jaw fence and raised eyebrows) and touching his face with the left hand, looking only briefly at the stone.
- 00:35-00:37 He spins the stone with both hands still looking at the group.
- 00:37-00:39 He carries the stone with the left hand to a close protrusion (the largest of the cliff) on the left
- 00:39-00:43 He rubs the stone on the grey surface of the cliff with both hands, producing white marks on it. He focuses his eyes on the stone, alternating rolling with rubbing actions. The movement goes from up to down along the slanted surface towards himself.
- 00:43-00.46 He rolls the stone on the surface with his right hand. Eyes are focused on the movement of his hands and the stone.
- 00:46-00:51 He holds the stone with his right hand, still on the surface. He removes small pieces of the stone with the thumb and left index finger. His eyes are focused on these actions.
- 00:51-00:54 He rubs the stone on the surface with both hands, white marks are clearly left on the surface. The eyes are focused on the movement of the hands and stone, from up to down and laterally.
- 00:54-00:55 He rubs with the right hand, eyes focused on the movement.
- 00:56-1:02 He holds the stone with his right hand and occasionally the right foot. at 00:57-00:58 He scatters with the left hand the surface where the stone was rubbed before, looking at it.
- The stone falls at 1:02. He looks at it from the cliff until 1.05.00
Below is the abstract from the article containing this video:
Stone handling (SH) is a form of solitary object play widely documented in four species of macaques and most recently also in geladas (Theropithecus gelada). Here, we describe the SH activity of two mother-reared captive gelada males, who combined different behavioral patterns in a sequence that occasionally led to the production of colored marks on a hard surface. Two playful techniques of different complexity emerged spontaneously in the two subjects. In the etching and releasing technique, the stone or pieces of it were repeatedly scraped across either a vertical or horizontal hard surface. In the grind and finger technique, additional patterns were recruited such as scratching the stone to produce small debris that the subjects manipulated through a thumb-index finger precision grip. Animals selected preferentially hard surfaces when their SH sessions involved patterns that potentially released color and engaged in such patterns for longer and in a repeated way. This evidence suggests the high motivation of the two males to engage in drawing-like behavior that, as it occurs for other forms of play, can be characterized by its autotelic self-rewarding nature. Digital video images related to the article are available at http://www.momo-p.com/showdetail-e.php?movieid=momo220922tg01a and http://www.momo-p.com/showdetail-e.php?movieid=momo220923tg01a
Virginia Pallante, Achim Johann, Michael A. Huffman, and Elisabetta Palagi (2023).
Stone handling in geladas (Theropithecus gelada): implications for spontaneous drawing‐like activity as a playful behavior. J. Ethol. doi.org/10.1007/s10164-022-00764-z
