Sorry, these are not the best pictures.
It's my garden "weedeater"..... I have posted about it in the past.
My garden area is next to my old chicken coop/pen/run... I plant in wide rows, 5 rows per bed, then let the chickens "weed" my walkways.
I made a tunnel using pvc, garden hoops and chicken wire. The chickens are able to come into the tunnel, eat the weeds in the walkway then go back into their pen.
I close the little trap door in their fence, move the "weedeater" to the next walkway, open the door there and the chickens "weedeat" that walkway for me, and on and on...... It takes about 5 to 10 minutes per walkway.
The hens are happy, I'm happy... it works for me.