Despite, only this year they will finally make the bald eagle the national bird. Which, I also learned that they are not official symbols until a President signs a document for them to be. It is just a recognized symbol but not official. (Just my opinion but why do they really need a bill for this? What changes would making anything like this official really do?)
Here is a list of other US symbols (article includes links to other countries of the world national symbols, some official, some not made official) if you are interested:
https://en.m.wikipedia.org/wiki/National_symbols_of_the_United_States
Bald Eagle for national bird, but honorary mention for the red-tailed hawk, which is the sound people mistakenly associate it with
Bald eagle honestly sounds like a possessed seagull, which I dont think most folks are down with that.