9 CFR §3.163

1. (a)The animal cargo space of primary conveyances used in transporting live birds must be designed, constructed, and maintained in a manner that at all times protects the health and well-being of the animals transported in them, ensures their safety and comfort, and prevents the entry of exhaust from the primary conveyance during transportation.
2. (b)The animal cargo space must have a supply of air that is sufficient for the normal breathing of all the animals being transported in it.
3. (c)Each primary enclosure containing birds must be positioned in the animal cargo space in a manner that provides protection from the elements and that allows each bird enough air for normal breathing.
4. (d)During transportation, the climatic conditions in the animal cargo area shall be maintained in accordance with the requirements of § 3.168.
5. (e)Primary enclosures must be positioned in the primary conveyance in a manner that allows the birds to be quickly and easily removed from the primary conveyance in an emergency.
6. (f)The interior of the bird cargo space must be kept clean.
7. (g)Live birds may not be transported with any material, substance (e.g., dry ice), or device which may reasonably be expected to be injurious to the health and well-being of the birds unless proper precaution is taken to prevent such injury.