Herman, I have chicken wire over the top of all of my runs. Better safe than sorry. I've heard that some hawks will attempt to pick up a goose! If they get their talons in, you're talking puncture wounds...which could cause infection...
I will say my runs are not the Taj Mahal by any stretch. The chicken wire has, over the years, stretched from the heavy snow in the winter, and so it sags down between the 2x4 that we have up. But, it's safe, and the chooks don't care what it looks like. Not everyone can cover their runs, of course, it's not mandatory, but I'm away from home enough that it would drive me crazy not knowing if my poultry was safe.
I will say my runs are not the Taj Mahal by any stretch. The chicken wire has, over the years, stretched from the heavy snow in the winter, and so it sags down between the 2x4 that we have up. But, it's safe, and the chooks don't care what it looks like. Not everyone can cover their runs, of course, it's not mandatory, but I'm away from home enough that it would drive me crazy not knowing if my poultry was safe.