Savvy Squirrels Outwit Trees
To help ensure the survival of their species, spruce trees may try to starve off local squirrels by supplying them with very few seeds (eaten by squirrels as food for their own survival). When the squirrel populate is supposedly reduced to the point where the trees can be assured of some cones surviving to plantation for future trees, the trees will suddenly and unpredictably produce *thousands* of cones.
The cool thing described in this article is that the squirrels are counteracting this through behavior not quite understood by scientists yet. Read the article for details. Like good stock brokers, red squirrels  predict when the market will be flooded with seeds and then invest big by producing a second litter of young, a new study finds.
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