The more interesting (and far less ethically challenging) use would be to understand why it is they're doing this. Explanations like "it thinks it's building a

The more interesting (and far less ethically challenging) use would be to understand why it is they're doing this. Explanations like "it thinks it's building a nest" (mentioned in related [1]) on the one hand or "play" on the other (my own) do seem very unsatisfying. Do they really not realize there is no resultant nest, and have they been observed using it as a nest subsequently? [1] https://www.bbc.com/news/uk-wales-67921442 https://www.bbc.com/news/uk-wales-67921442