I gave up & just planted enough to "share."
(Chickens peck through the holes in the fence - they don't jump it, so I planted "extra" broccoli & tomato plants around the perimeter - for the chicens.)
We just happen to have their litter from last year in a pile composting about 5 feet from the garden. Turns out, they love this even more than the garden! It's loose and full of bugs! Perhaps a more enticing distraction will help?