Having a keen eye for woodworking, you can tell that the bamboo from that tree over there will make an excellent box. Boxes made from bamboo trees are very sturdy and fashionable. You have an eye for fashion as well, you see.
While working on your wooden box you hear a strange cry from above. You look up and see an angry hawk (はこ) flying overhead. Oh no! That bamboo you cut down must have been where the hawk lived. Imagine finishing up the box, climbing up some bamboo and tying the box securely up there as a replacement home for the hawk.