What do you call a bird that's afraid to fly?

This joke tickles our funny bone through a clever bit of wordplay, relying on the double meaning of a single word. The setup leads us to imagine a generic feathered creature that has an aversion to heights. However, the punchline cleverly pivots to a common idiom, where "chicken" isn't just a type of bird, but also a slang term for someone who is scared or cowardly. The humor comes from that unexpected, yet perfectly logical, twist in meaning.

The idea of a "chicken" as a coward has a long history in the English language. Before the term "chicken" itself was widely used in this way, phrases like "hen-heart" appeared as early as the mid-15th century to describe a timid person. William Shakespeare even used "chickens" to refer to fleeing soldiers in 1616. While chickens do have wings, they are not known for their impressive flight capabilities, typically only managing short, frantic bursts to escape predators or reach a low perch. This perceived flightlessness and their skittish nature likely contributed to the enduring association of the word with a lack of bravery, culminating in the common phrase "to chicken out" by the mid-20th century.