Carl was learning rain is wet and feels like something attacking him, and he now associates it with unpleasant sensations. I am almost certain Carl will run for cover at the next rain drop he feels.
A wet chicken is a cold chicken. A cold chicken is an unhappy and uncomfortable chicken. A wet, cold chicken can easily become hypothermic and it can be life threatening. Any chicken displaying their tail down low and flat is waving a red flag that their health may be in danger and that they are...