Marmosets Sid and Chuck have their health checks and wildlife vet John Lewis performs a delicate operation on Chuck, as it was recently discovered Sid is actually a girl. During Sid’s health check an X-ray is taken to get a clearer idea of the extent of her mobility problems. Golden cheeked gibbon Mikado undergoes crate training to help with his upcoming house move. Baby woolly monkey Olivia shows of her skills as she becomes more independent while the rest of the group tuck into grapes on the vine.