Final answer:
Legally, when transporting game birds, certain parts such as the head or a fully feathered wing must be kept on the carcass for identification until the bird is processed or reaches its final destination.
Step-by-step explanation:
When transporting game birds, such as both upland and waterfowl, you are legally required to keep certain parts of the bird attached for identification purposes.
According to hunting regulations, which may vary by jurisdiction, typically either the head or one fully feathered wing must be left on the carcass of the bird until it reaches its final destination or is fully processed. The requirement to leave these parts attached ensures that the species and sex of the bird can be determined, which is necessary for enforcing game laws and managing wild bird populations.