"Behind the Tunes: Southern Pride Chicken" is one of the many mini-documentaries created for the Looney Tunes Golden Collection Volume 1, this time focusing on Foghorn Leghorn. I think that I may have heard previously that his voice and personality were based on Sen. Cleghorn from George Burns's radio show, but this short lays it all out. I had certainly never known that Henery Hawk was the original chicken star until Foggy debuted and stole the show.
So, this should mainly be of interest to people who have never viewed a single Looney Tunes or Merrie Melodies cartoon. Still, even you have, then it's nonetheless an eye-opening look at animation's most famous Gallus domesticus (I don't know whether that's the genus or family or what, but chickens are members of it).