Nest Stuctures in Bornean Orangutan
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Abstract
Struktur Sarang Orangutan Kalimantan. Nest-building techniques processes related parties
in choosing the trees, the basic building structure, making layers, and adding nest locking
system with accessories. There are Lacks of data about the pattern of the orangutan nest and
only van Schaik (1995) described four Variations of nest structure. By Following 22 orangutans
with instantaneous focal animal method, 19 vertical nest structures are found, and horizontally
variations orangutan nest forming butterfly pattern. Tree species are Elaocarpus mastersii
that mostly used by Orangutan to build nest with type of branch direction and height of first
branch as the Reasons. Nest was built in 5-9 meters height and they were seldom to rebuilt or
reuse old nest. They seldom to develop their nest in the last fruit trees to avoid nightpredators.
Kata Kunci: Orangutan, Struktur dan pola, sarang.
in choosing the trees, the basic building structure, making layers, and adding nest locking
system with accessories. There are Lacks of data about the pattern of the orangutan nest and
only van Schaik (1995) described four Variations of nest structure. By Following 22 orangutans
with instantaneous focal animal method, 19 vertical nest structures are found, and horizontally
variations orangutan nest forming butterfly pattern. Tree species are Elaocarpus mastersii
that mostly used by Orangutan to build nest with type of branch direction and height of first
branch as the Reasons. Nest was built in 5-9 meters height and they were seldom to rebuilt or
reuse old nest. They seldom to develop their nest in the last fruit trees to avoid nightpredators.
Kata Kunci: Orangutan, Struktur dan pola, sarang.
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