Nikkor 200-500 VR/TC 14 III @600mm, f8, ISO 1250; Nikon D750 crop (APS-H), Amazon The black-mantled tamarins feed on anything they can find in the forest from insects, fruits, nectar to seeds. They enjoy https://tinyurl.com/theTreeSap given a chance. The large canines are the reason why they can’t gouge their own holes into the bark with their lower teeth like the marmosets do (it involves up and down movement).
Milvus 35/1.4 @f4, evening light, handheld; Nikon D600 Gigantic trees represent forests in forest in miniature. Amazon
Sigma 50/1.4 A @f6.3, early morning, handheld; Nikon D600 Upper reaches Amazon