Apartments in the rainforest

Tree hollows are sought-after refuges for a succession of creatures, from termites to primates. Tree hollows make safe nests and dens where mothers can raise their young protected from predators and where roosting birds and various mammals can take shelter during the day. The creation of a tree hollow involves a complex interaction between the largest and longest-lived creatures on the planet—trees—and some of the smallest—bacteria—and then continues with the participation of hundreds of other...