This is wonderful!

The smart feeder simply pays the birds for cleaning.

As soon as the magpie brings and drops the trash into the hole, it is rewarded with food. https://t.co/G4RQxhsBLJ https://video.twimg.com/ext_tw_video/1857373214671794176/pu/vid/avc1/960x720/CfqylSl5JY0Mdhnr.mp4?tag=12