我在公園看見過紅頭啄木鳥幹這事。我看了它幾個月，現在它不見了

這是網絡圖片：

The acorn woodpecker constantly makes "holes" in a dead tree stump during the summer and fills those holes with acorns that it can eat in winter. These woodpeckers can store "50,000" of these acorns in a large tree.