Network radio quickly became part of popular culture in the early 1930s and radio stars were parodied or caricatured everywhere—in feature films, on stage, in newspapers and magazines (the great Al Hirschfeld comes to mind) and even on radio itself. There seemed to be a number of mimics in the dying days of vaudeville appearing in theatres and trying to wow an audience with their approximations of Al Jolson, Bing Crosby, Ed Wynn, Jimmy Durante, Eddie Cantor and so on. The Brown Derby had drawings of the stars on its walls.
Cartoons got in on the fun, too. One rarely-seen example is
The Big Birdcast, a 1938 Color Rhapsody released by Columbia. The impressions aren’t exactly the greatest at times but there are enough catchphrases and screen references that just about anyone watching the cartoon back then would get the references.
The cartoon opens with the song “Sing, Baby, Sing,” and cuts to a short of a canary (?) boo-boo-boo-ing the lyrics. Who else could it be but Bing Crosby? Suddenly, a rooster pops up and screeches out a scat to the melody. If you didn’t get it from the vocalisation, he leans into the camera and squawks “Hi-ya, Buck!” Yes, it’s Andy Devine. In 1938, he was best known for greeting Jack Benny the same way before taking part in a Buck Benny Western parody sketch. Devine, by the way, actually did squeal
Sing, Baby, Sing on the Benny radio show.

Rudy Vallee’s hair and megaphone are recognisable in the next scene. The megaphone gets a solo.

Violin? Town Hall? Yes, it can only be a send-up of the Jack Benny/Fred Allen feud (Allen’s show at the time was called
Town Hall Tonight). Composer Joe De Nat tosses in a joke of his own when the soundtrack plays the Jell-O signature when the Benny bird is introduced (Benny was sponsored by Jell-O then), followed by a scratchy version of
Love in Bloom, Benny’s theme song. Says the Allen worm: “One more lesson and I’ll play
The Bee.” The radio feud began over a 10-year-old violinist’s performance of that composition by Schubert, followed by a crack by Allen about Benny’s musicianship. The worm then launches into the composition after splitting up into, well, bees. The Benny bird escapes into a hollow tree and emerges in a cowboy costume as “Buck.”

The other radio feud—Ben Bernie (“the old maestro and all the lads”) and gossip columnist Walter Winchell (“this is Mrs. Finchell’s boy Walter” “with lotions of love”—Winchell was sponsored by Jergen’s Lotion).

Eddie Cantor (the bird version fits in a reference to Ida and that putt-putt-putt noise the real Cantor used to make on the air). The large bird with the tuba has a Greek accent, meaning he’s Parkyakarkus, a character on Cantor’s show played by Harry Einstein (I’m presuming the talking microphone is supposed to be Cantor’s announcer, Jimmy Wallington, though it doesn’t sound anything like him).

Ed Wynn, Joe Penner (with Goo Goo the duck), and the NBC chimes all make appearances with some more obscure parody caricatures.
Danny Webb shows up on Columbia’s doorstep to do the same Penner impression you hear in Warner Bros. cartoons. He does a number of the other voices as well. Manny Gould receives the sole animation credits.