What is the national bird of the United States of America?
user
The bald eagle is the national bird of the United States.
assistant
Why did the pick the bald eagle to be the national bird?
user
The bald eagle is a very impressive bird, with a large wingspan.  It is also a very hardy bird that can live almost anywhere, and is generally quite resistant to human disturbance.  Furthermore, it’s an easily recognizable bird, with its white head and tail.
assistant
What is the national bird of the United States of America?
user
The bald eagle is the national bird of the United States.
assistant
Why did the pick the bald eagle to be the national bird?
user
No one is sure, but legend has it that it was at a picnic hosted by then-president Andrew Jackson that someone asked what the national bird was. When no one knew, Jackson himself volunteered that the national bird was the bald eagle.
assistant
What is the national bird of the United States of America?