Zoos often purchase or exchange animals with each other in order to keep their populations stable, provide proper space for the creatures, and to promote genetic diversity in their progeny. In this case, the North Carolina Zoo in Asheboro had to relocate their flock of 15 Chilean flamingos to make way for a demolition and construction project. They were shipped to the Greenville Zoo in South Carolina. In cardboard boxes. So you can consider the above an "unboxing video."
This is no aberration, but the optimum method for shipping flamingos, or "best practices." They are big birds that only weigh about four pounds each. Cardboard is safer for them and their delicate wings than a crate or a metal cage would be, and they had plenty of airflow. The birds were given a health check as they were unpacked, and appear to be settling in just fine in their new home. -via Fark