I have been using this method for quite a few years now and it has worked perfectly for me. This setup is a deterrent rather than something that completely closes off the top, but it's a lot easier to set up and has proven to be quite effective!

Here are my two methods of putting up baler twine:

This method is cleaner, because it only attaches to the posts, not the chicken wire.
IMG_20170913_183246.jpg


This method is messier, because the string pulls on the wire. This, however, allows you to have smaller openings.
IMG_20170913_183315.jpg


I tried this because I lost a hen to a hawk. After that, I knew the hawk would come back until my chickens were all gone. My rooster was also a coward.
After I set the twine up, I sat in the run petting some of my chickens. On the other side of the coop, I saw the shadow of a hawk as it swooped down. The chickens panicked, and one even jumped into my lap. All of my chickens were okay. The hawk was deterred, and my test was successful.

This method is extremely cheap, and works very well for me. I hope you'll try it before buying netting or wire mesh.

Thank you for reading.

BYC Predators and Pests Forum