drawing
subspecies rubra and variegata
at Duke, hanging
at Duke, 3 babies
at Duke, looking down
at Zoo d'Asson, France
at Zoo of Timbazaza, Antananarivo
territorial calls (distant communication) recorded at Tsimbazaza
sonagram of snd 57.1
medium-intensity alarm calls recorded at Tsimbazaza
sonagram of snd 57.2
high-intensity alarm calls, first 'hon' and 'ko' later powerful roars with sharp cries recorded at Tsimbazaza
detail of sonagram of snd 26.6f
high-intensity alarm calls, mix of roars, sharp cries and plaintive calls, trying to make maximum noise in surrounding forest recorded at Hiaraka
sonagram of snd 47.7c
high-intensity alarm calls, like preceding sound recorded at Tsimbazaza
sonagram of snd 26.1
high-intensity alarm calls ending with a plaintive call recorded at Tsimbazaza
sonagram of snd 26.6e
sonagram of V.v.r. pulsed squawk
sonagram of V.v.r. squeal1
sonagram of V.v.r. squeal2
growl/snort of infant
sonagram of V.v.r. inf growlsnort
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