In the movie "National Bird," the US national bird is the bald eagle. The film explores the implications of drone warfare and the experiences of individuals involved in the U.S. military's drone program. The bald eagle, as a symbol of freedom and strength, contrasts with the themes of surveillance and the moral dilemmas faced by those operating drones. The documentary highlights the impact of such military actions on both the operators and the affected communities abroad.

The national bird of the United States is the bald eagle, symbolizing freedom and strength. The national animal is the American bison, representing the country's wildlife and natural heritage. Both symbols reflect the nation's history and values, with the bald eagle prominently featured in various emblems, including the Great Seal of the United States, while the bison serves as a reminder of the American frontier and the importance of wildlife conservation.

The film "National Bird" does not specifically identify a national bird for the world, as it is focused on the topic of drone warfare and its impact on civilians. However, if you're looking for a symbolic representation, the "national bird" of the United States is the bald eagle, often regarded as a symbol of freedom and strength. Different countries have their own national birds that hold cultural significance, but there is no single national bird for the entire world. Each nation selects a bird that represents its identity and values.

In the context of the movie "National Bird," which explores the implications of drone warfare, the term "US federal bird" humorously refers to the drone aircraft used by the U.S. military. However, if you are asking about the national symbol of the United States, that would be the bald eagle. The bald eagle was designated as the national bird in 1782 and symbolizes strength, freedom, and the spirit of the nation.