drawing
subspecies m. macaco and m. flavifrons
at Duke, female
jump, Nosy Komba
at Duke, male
at Duke, face of male
at Lokobe Nature Reserve
at Nosy Be
at zoo of Vincennes, Paris
at Nosy Komba
contact calls recorded at Nosy Komba, 17 Apr 1957
sonagram of snd 6.1
contact to more alarm-like calls
sonagram of snd 64.2a
recognition calls (distant communication) recorded at Nosy Komba, 7 Apr 1957
sonagram of snd 4x.3a2
territorial calls during the evening (distant communication)
sonagram of snd X.4
beginning alarm call, intensity low recorded at Nosy Komba, 17 Apr 1957
sonagram of snd 6.6b
alarm calls, intensity moderate recorded at Nosy Komba, 17 Apr 1957
sonagram of snd 6.4a
alarm calls, intensity strong
sonagram of snd X.1
alarm calls, intensity maximum recorded at Nosy Komba, 17 Apr 1957
sonagram of snd 6.3b
grunting alarm calls, moderate intensity recorded at Nosy Komba, 17 Apr 1957
sonagram of snd 6.3a
grunting alarm calls, moderate intensity 1 individual recorded at Nosy Komba, 17 Apr 1957
sonagram of snd 6.4c
alarm calls during night recorded at Nosy Komba, 7 Apr 1957
sonagram of snd 4x.3b2
sonagram of above sound
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