As a general guideline, the following table provides approximate daily food intake for some common monkey species:
Species: Approximate Daily Food Intake (lbs)
Spider Monkey: 0.5 - 1
Capuchin Monkey: 0.25 - 0.5
Rhesus Macaque: 0.25 - 0.5
Squirrel Monkey: 0.25 - 0.5
Marmoset: 0.1
It's important to note that these are just rough estimates, and the actual amount of food provided to monkeys in a zoo may vary based on the zoo's policies, the individual monkey's preferences, and any recommendations from the zoo's veterinarian or animal care team.