OFI Australiaのインスタグラム(ofi_australia) - 11月8日 11時56分

Did you know ... when male orangutans reach maturity, some of them develop large cheek pads called “flanges”. They also develop large throat sacks to make loud verbal noises called “long calls”, which are used to warn other rival males and attract females. Sometimes the sound of a long call can be heard from up to two kilometres away!

#OrangutanAwarenessWeek #oaw2023 #OAW #saveorangutans #saynotopalmoil

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