I once saw something with crows trained to collect fag ends and swap them for some seeds
essentially a machine with a hole in the top and seeds you can see through a window
leave some fag ends on top, pretty quickly they learn (by accident) knocking them in gives them some seeds
after that they go hunting for fag ends
always fancied doing something like that, if I eventually have some free time
essentially a machine with a hole in the top and seeds you can see through a window
leave some fag ends on top, pretty quickly they learn (by accident) knocking them in gives them some seeds
after that they go hunting for fag ends
always fancied doing something like that, if I eventually have some free time