This little bird visited our garden. What is it, and what President of the USA did it help?
Answer:
This is an immature Prothonotary Warbler (the adults have dark beaks). Knowledge about suspected spy Alger Hiss's spotting of a Prothonotary Warbler helped new congressman Richard Nixon prove that Hiss committed perjury. (Google it for the whole story.) This put Nixon in the spotlight, boosting his political career.
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