TV Tropes has an exhaustive rundown of all the ways everything’s better with chickens
Chickens — small flight-inhibited birds with a tendency to break out in screeching panics over the smallest things — are inherently funny, like penguins and monkeys, maybe because they’re being Comically Serious. Unlike penguins and monkeys, they’re also regularly eaten (they taste like chicken). And that’s pretty much it. This isn’t really a family of tropes that has a whole heck of a lot of logic behind them.