Are chickens born knowing Morse code? Our nearly-4 week old chicks spend an awful lot of time pecking the sides of their cardboard condo. Are they signalling to the outside world that they're held hostage in a crazy person's house and need immediate rescue? It almost seems like a compulsive stress relief but they don't act stressed otherwise (eating sleeping pooping cheeping all systems normal - no loud peeping or other odd behavior). They do seem to do it most right before lights-out. Anyway just curious . . .