When reaching every oak, we look for the fruits hidden between the leaves. Sometimes, we use our camera to recognize them in the distance, disguised among many branches and leaves. We collect fruits with tree-pruning scissors. Despite this tool’s long reach, sometimes we have to climb to a lower branch and work from there. We cut the base of the fruits and watch them fall. Once in the ground, we open the fruits to extract the seeds. If the fruits are cut while closed, we can still collect the seeds. However, if they open while still on the branch, the wind will disperse the seeds, and it is almost impossible to find them, especially in this kind of soil.