Taken 27-Dec-16
Visitors 7

53 of 65 photos
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Photo Info

Dimensions2048 x 2560
Original file size1.83 MB
Image typeJPEG
Color spaceAdobe RGB (1998)
Date taken27-Dec-16 16:21
Date modified27-Dec-16 16:52
Shooting Conditions

Camera modelNIKON D600
Focal length300 mm
Focal length (35mm)300 mm
Max lens aperturef/5.7
Exposure1/200 at f/11
FlashFired, compulsory mode, return light detected
Exposure bias0 EV
Exposure modeAuto
Exposure prog.Aperture priority
ISO speedISO 640
Metering modeCenter-weighted average
Digital zoom1x
_DSC7294EDSHP  Pc 7136 pontius

_DSC7294EDSHP Pc 7136 pontius

Yesterday, Sprite’s ring-tailed lemur group (NHE 9) was in a state of agitation, all were in the trees sounding the terrestrial predator alarm call unique to ring-tails. At the DLC, if a Lemur catta sees something threatening on the ground (whether it be a squirrel, raccoon, or a suspicious looking package) the alarm call is started, and the whole group immediately takes to the trees, with all members (except infants) taking up the call until the threat is past. The vocalization has been described in the scientific literature as “repeated yaps interspersed with open-mouthed clicks”. In the wild, it has been documented that when ring-tails and sifaka share the same habitat, the sifaka often respond to ring-tailed lemur alarm calls by moving to the tree tops and starting the “sifak” vocalization, their version of a terrestrial alarm call. However, the NHE 9 sifaka group apparently have not read the book of lemur vocalization etiquette—while the ring-tails were going crazy with anxiety, jumping from tree to tree and yapping intensely (not to mention all the open mouthed clicking that was going on!), the sifaka group, not 100 yards away, were calm as can be, peacefully gathered in the top of a maple tree, basking in the sun or lazily feeding on maple leaf buds. If you were a lemur, which of these species would you want to be?