I can see the similarity to a woolly in the colouration, but the head and the tail are very different and sakis are much smaller too.
They are quite a challenge to photograph, but I like this shot a lot.
I stand corrected - just having looked up the red-backed bearded saki it is obvious that this is one ... surprised me as I`d only ever seen the white-faced in the flesh and had no idea that Colchester had this species - must make the effort to get over there sometime this year and check it out !!
