So today I was going to move the ducks water pan because they've made a mud pit out of its former location. Something in my head told me there was a snake near the hose. Sure enough, a ginormous garter snake, like 20 inches long, edged over as I dumped out the pan. As I filled it with water, he moseyed toward the gate to the duck run.
Then he went up the step.
Then he turned and lashed out at me.
I was trying to go past him to put the pan in the pen, and he kept striking. Talk about a Napoleon complex!
I chased him off the step and into the run and put the pan down, but I used a very long stick because those suckers are just too dangerous.
After braving the vile serpent, the ducks rewarded me by drinking out of the mud puddle.
So, no. Ducks don't chase garter snakes.