Perhaps best known for Rockefeller Center's "Prometheus," Paul Manship was a prolific 20th-Century American sculptor. These birds are a few of his works on display at the Smithsonian American Art Museum.
The Smithsonian's description of the Shoebill contains this statement: "By exaggerating certain features or expressions, Manship also lets a little bit of their personalities peek through. This is especially visible in his gilded works, where the gold patina highlights the contours of the animal's forms and their precise surface details. Many of Manship's animal sculptures were originally created as part of his design for the gates of New York's Bronx Zoo."
You'll have to forgive me for quibbling, but the Shoebill is distinctive enough not to need much exaggeration...
Photo from Wikipedia.