After hearing the cuckoo for the first time this year:
Me: That was the cuckoo - this means that it is definitely Spring!
Betty: Why does it mean it is Spring?
Me: Because the cuckoo comes in Spring
Betty: Why does he come in Spring?
Me: Because of all the pretty flowers
Betty: Where does he come from?
Me: From far away
Me: There it is again... did you hear it?
Betty: Yes. Where is the cuckoo?
Me: In the woods over there
Betty: Why is he in the woods?
Me: Because that's where he likes to be
Me: Because he likes woods
Betty: But why?
Me: Umm.... because he likes trees
Betty: Likes trees? Why does he like trees?
Me: Because they protect him from the sun
Betty: Why doesn't he like the sun?
Me: Because it is hot
Betty: Where does he go in the Summer?
Me: Far far away
Me: To another country
Betty: Which country?
Me: One across the sea
Betty: So where does he go in the Winter?
Me: Another country
Betty: The same country as in Summer?
Me: I have absolutely no idea