Cant find anything about this if its intended behavior or not, but each time a gobbler jumps into a replanted berry bush it "consume" 1 round of use, despite of having berries or not for example:
1.- in a recently fertilized berry bush with fruits ready to harvest, the berries shows "bigger" but if the gobbler jumps into that bush, the berries arent consumed but diminish their size to their next "depleted" state.
2.-if the globber jumps to a near depleted berry bush (1 harvest more before withering) with or without berries, the bush whiter immediately.
3.- this doesnt affect "natural" spawned berry bushes.
i saw this behavior in hamlet only. not sure if its around other expansions like RoG or SW, i dont checked it yet.
plant a few berry bushes, let a gobbler spawns, wait for him to hide in a nearly bush at dusk, watch how it "consume" one use of that bush despite it doesnt eat the berries.