The character first appeared in the 1942 cartoon Bugs Bunny Gets the Boid, directed by Bob Clampett. The cartoon's plot revolves around the hopeless attempts of the brainless buzzard, here called "Killer", to catch Bugs Bunny for his domineering mother back at the nest. Beaky's voice, modeled after ventriloquist Edgar Bergen's character Mortimer Snerd, is provided by voice actor Kent Rogers. Clampett brought the character back in the 1945 film The Bashful Buzzard, a cartoon that closely mirrors its predecessor, only this time featuring Beaky's hapless hunting without Bugs as an antagonist. Rogers reprised his role as the character's voice for the film, but he died in World War II before finishing all his dialogue, so Stan Freberg was brought in to finish the work (as was Eddie Bartell, according to some sources).
Warner Bros. apparently thought they had something in the character, and Beaky was featured in much of the Looney Tunes merchandising of the time. He also appeared in several issues of Dell Comics' Looney Tunes series of comic books, usually paired with another minor player, Henery Hawk.
Clampett left the studio in 1946, ending Beaky's career for a time. The character was eventually brought back in the 1950 Friz Freleng film The Lion's Busy, now voiced by the versatile Mel Blanc. Freleng made the buzzard smarter, pitting him against a dim-witted lion named Leo. Bob McKimson also featured the character in a film that year, Strife with Father. McKimson's Beaky is again back to his idiotic self, this time under the tutelage of his adoptive father, a sparrow who is trying to teach Beaky how to survive in the wild.
Most recently, Beaky Buzzard has had minor roles in various Warner Bros. projects, such as Tiny Toon Adventures, where he plays the mentor of the minor character Concord Condor, or the movie Space Jam, where he has a short cameo.