The rooster and hen are married here, as censorship norms of the time required. In future episodes, Henry would do battle with the single bachelor Foghorn Leghorn and his harem of chicks.
The worm bears a resemblance to Jiminy Cricket, who had first appeared in rival studio Disney's Pinocchio (1940) two years before.
Certain prints of this cartoon place a different soundtrack over the already-existing soundtrack, creating a jumbled mess of music. These prints mostly lift music from the cartoon Putty Tat Trouble (1951).
A chicken hawk is another term for the red tailed hawk.