That's a "trick" that some people have discovered to get more "mushrooms" for the food bin. PAUSE the game and bring as many kids as you can to a mushroom (when it stops saying "picking mushroom" then more kids won't help.) When the game is unpaused, all of the kids are were marked as picking the mushroom will bring it over to the food bin. This is especially nice when it's an orange mushroom!!!

But it would be nice if kids that are weaned with framing skills would find the mushrooms on their own. Or if picking a mushroom would give the kids more farming skills.