All you need to do is knock down the eating totem and they will leave so you can get the noni after that... If they ate all the Noni or you harvested them all, you can cast the bees power on the Noni and they will pollinate it giving it more fruit. (I don't now how much fruit).
No you cannot
Food.
below the food bin next to the ruins
In Virtual Villagers 4, the soup and the pond serve crucial roles in the villagers' survival and development. The soup is a vital food source that villagers can prepare using ingredients found throughout the game, helping to keep their energy levels up. The pond is used for fishing, providing another food source to sustain the villagers. Both resources are essential for maintaining the villagers’ health and enabling them to thrive in their environment.
Learn how to fish and or collect mushrooms and or study agriculture
You heat the rocks in the rock pit, then cover the hot rocks with the banana leaf things. It will take a coupe of villagers to get all the rocks hot at the same time. If you take too long, the first hot ones will cool down. After the fire pit is hot, it stays hot indefinitely. Shake down the fruit and the villagers will automatically place them on the fire pit.
this usually happens when somebody isn't getting enough food or nearing the end of their life.
You can buy the farming tech if the villagers don't want to fish any more. Then they will get food from the cocount trees.
1. Noni bush 2.crops- from aquetduct 3.fish from pond/lake
you need level 3 science and Constitution drag a master builder to the spot under the food bin and next to the ruins
1. Drop your chief on the food shelter, he should magically create food (about 200 peices). He can only use this ability once every 24 hours.
Near The Science lab or the bridge there is a black berry bush