My concern is wild birds (pigeons) and I need something that will keep them out of the run while allowing chickens through. There's food in the run, so I'm not yet convinced the chain curtain will work, but it seems like the best option at this time. Treadle feeders + chain curtain might be sufficient.A fly curtain was a ubiquitous sight in most Australian shops until the 90s when air conditioning and automatic doors became widespread.
It's just hanging strips of plastic. It's probably useless v foxes being plastic, butiIt's effective against flies.
They are still available online or easily made.
R
Great idea for a chicken coop