Post by matt on Mar 17, 2021 15:24:24 GMT
It could depend on a lot of things - e.g. what kind of predators are around, where the box is located (deeper hole if it gets a lot of sun through?) etc Probably too many things going on for us to ever truly understand it! You can try your best to do everything right, and they'll still choose an old teapot in your neighbour's shed 
