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Japanese report

AS-HOPE report

Number: AS-23-019-3

Study on reproduction of wild Borneo Orangutan


Date: 2012/3/5 - 2012/3/11

I stayed at Danum Valley Conservation Area from 6th March to 10th March and followed orangutans for 4 days. I checked one mother still kept her baby born in 2010. I confirmed one adult female was pregnant. Therefore I almost accomplished my purpose in this field trip. Additionally, I found one adult male fully developed his secondary sex characteristics after six months of absence. I predict increasingly fierce competition among three adult males in our study site.

Observed pregnant female

A large group of wild elephant

AS-HOPE Project<>