There have been no cases reported of a bird falling in an Ecotone and harming itself. However, the existence of soft flexible walls and a soft flexible floor minimize the possibility of impact related injuries. In both regards, birds typically use all the vertical space provided by an Ecotone. In the process, they benefit from the exercise required by vertical movement. Most birds adapt to this setting within a day or less.
Some birds require several days.
A few birds, however, never seem to acclimate. If a bird has not become comfortable within 7 - 10 days, it probably never will adjust. Most, however, find the assembly process to be a moderately challenging 3 - 4 hour process. It also requires creation of one or two entryways. An entryway consists of two clear, flexible tubes that are threaded vertically through the edges of the netting.