These monkeys are famous for their loud howls, which can travel three miles (4.8 km) through dense forest. They are the loudest monkey and may be the loudest land animal. Group males call at dawn and dusk, and at times during the day. The function of howling may relate to intergroup spacing and territory protection.
ð iː z WORD_BOUNDARY m ʌ ŋ k i z WORD_BOUNDARY ɑ ɹ WORD_BOUNDARY f eɪ m ə s WORD_BOUNDARY f ɔ ɹ WORD_BOUNDARY ð ɛ ɹ WORD_BOUNDARY l aʊ d WORD_BOUNDARY h aʊ l z WORD_BOUNDARY w ɪ t̠ʃ WORD_BOUNDARY k æ n WORD_BOUNDARY t ɹ æ v ə l WORD_BOUNDARY θ ɹ iː WORD_BOUNDARY m aɪ l z WORD_BOUNDARY f ɔ ɹ WORD_BOUNDARY eɪ t WORD_BOUNDARY k eɪ ɛ m WORD_BOUNDARY θ ɹ uː WORD_BOUNDARY d ɛ n s WORD_BOUNDARY f ɔ ɹ ɪ s t WORD_BOUNDARY ð eɪ WORD_BOUNDARY ɑ ɹ WORD_BOUNDARY ð ə WORD_BOUNDARY l aʊ d ɪ s t WORD_BOUNDARY m ʌ ŋ k i WORD_BOUNDARY æ n d WORD_BOUNDARY m eɪ WORD_BOUNDARY b iː WORD_BOUNDARY ð ə WORD_BOUNDARY l aʊ d ɪ s t WORD_BOUNDARY l æ n d WORD_BOUNDARY æ n ɪ m ə l WORD_BOUNDARY ɡ ɹ uː p WORD_BOUNDARY m eɪ l z WORD_BOUNDARY k ɔ l WORD_BOUNDARY æ t WORD_BOUNDARY d ɔ n WORD_BOUNDARY æ n d WORD_BOUNDARY d ʌ s k WORD_BOUNDARY æ n d WORD_BOUNDARY æ t WORD_BOUNDARY t aɪ m z WORD_BOUNDARY d ʊ ɹ ɹ ɪ ŋ WORD_BOUNDARY ð ə WORD_BOUNDARY d eɪ WORD_BOUNDARY ð ə WORD_BOUNDARY f ʌ ŋ k ʃ ə n WORD_BOUNDARY ʌ v WORD_BOUNDARY h aʊ l ɪ ŋ WORD_BOUNDARY m eɪ WORD_BOUNDARY ɹ ɪ l eɪ t WORD_BOUNDARY t ʊ WORD_BOUNDARY ɪ n t ə ɹ ɡ ɹ uː p WORD_BOUNDARY s p eɪ s ɪ ŋ WORD_BOUNDARY æ n d WORD_BOUNDARY t ɛ ɹ ɪ t ɔ ɹ i WORD_BOUNDARY p ɹ ə t ɛ k ʃ ə n WORD_BOUNDARY