I usually keep a mixed henhouse. Geese and guineas both hate snakes and are way more agressive to them. I know it wouldn't be a fix for right now, but consider raising one or the other with your chicks. This is what I am working to reaquire.
There was a time I had 186 chickens, 30 guineas more or less, 3 breeding pairs of Toulouse geese, and the lake wasn't 300 yds from my house. Everyone had copperhead issues but me. Saw my guineas gang up and peck a copperhead to death when it made the mistake of overnighting in our brush pile. The geese were in the henhouse too. No coon problems; no fox problens, no anything in my hen house but birds. The only real fuss we had was the fight between the dominant guinea and alpha gander over who was going to run the chicken yard. My Buff Orpington roosters just let them fight it out and stayed out of it. Sam the gander was too big and Ticker the Guinea was too mean, so they remained 100% neutral, smart boys.
Here, we have my Pilgrim geese started but not really going strong yet. Still working on getting my guineas so I have to use 'alternate' methods for snake issues.
I have "The Judge,' Taurus defender revolver made 45/.410 which takes either 2 and 1/2 inch .410 shells for snakes and long colt .45s for the 4-legged problems. It does the job. I am however in a constant battle with my snake-fearing husband to leave my King snakes alone as they eat other snakes. Learn to identify the species in Kentucky. No animal makes a habit of building a home close to a predator that feeds on it. My mother taught me that. We had a pair that raised eggs in our backyard every year back in Louisiana.
As a head's up though, we just killed a 3ft Cottonmouth water moccasin crawling on a friend's deck railing which is right over his above ground pool. They are close to 2 miles from the river. The floods this past spring brought them in, stranded them when the water receded, and now they have taken up residense in the local cow ponds. Keep an eye out around any water area close to your house. Please understand Cottonmouths are super agressive, highly poisonous, blazing fast on land, and deadly faster in the water. They are the snakes you see a lot of web video on falling out of trees into fishing boats. Just be extra cautious in moist, water prone areas.