However, she explains, that isn't enough. Conlee says that HSUS is rotating out consultants in Liberia to monitor the situation and is installing new equipment and other resources "so a new every day feeding system can be carried out."
Of the 66 male and female chimps currently on the islands, 13 are adolescents or infants, according to records provided to The Dodo by HSUS.
One, named Lisa, is less than a year old. The oldest chimp, named Samantha, is 41.
Some of the chimps have cataracts. Some are limping. And some are suffering from blindness.
200 chimps were originally released to the islands. More than half, says HSUS, have died.
To donate or take action for chimps, visit HSUS.
You can watch a clip of the chimps in Liberia, below.