minus-squareWytch@lemmy.ziptoDIY@slrpnk.net•This Hi-Tech Bird Feeder Lets Clever Magpies Exchange Bottle Caps for FoodlinkfedilinkEnglisharrow-up14·6 months agoOK but how can you tell if the caps they turn in are actual litter and not from bottles they bought themselves? Seems like an easy system to exploit linkfedilink
OK but how can you tell if the caps they turn in are actual litter and not from bottles they bought themselves? Seems like an easy system to exploit