(a) Acclimation. Birds may not be housed in outdoor facilities unless the air humidity and temperature ranges and, if applicable, pool or other aquatic area (e.g., ponds, waterfalls, fountains, and other water features) temperature ranges do not adversely affect bird health and comfort. Birds may not be introduced to an outdoor housing facility until they are acclimated to the ambient temperature and humidity and, if applicable, pool or other aquatic area temperature range which they will encounter therein.

(b) Shelter from inclement weather. Outdoor housing facilities must provide adequate shelter, appropriate to the species and physical condition of the birds, for the local climatic conditions to protect the birds from any adverse weather conditions. Shelters must be adequately ventilated in hot weather and have one or more separate areas of shade or other effective protection that is large enough to comfortably contain all the birds at one time and prevent their discomfort from direct sunlight, precipitation, or wind. Shelter must also be constructed to provide sufficient space to comfortably hold all of the birds at the same time without adverse intraspecific aggression or grouping of incompatible birds. For birds that form dominance hierarchies and that are maintained in social groupings, shelter(s) must be constructed so as to provide sufficient space to comfortably hold all the birds at the same time, including birds that are low in the hierarchy.