Answer: I would have expected a rodent of some sort being attracted to seeds falling from the feeder, but the rodent (such as vole) would usually leave a tunnel. I suppose it is possible a rat or chipmunk is wearing a track along the grass, but I have never actually seen this happen because they usually scurry in varied patterns. I have seen dead strips as you described though, and they were the result of someone walking along with a sprayer of herbicide in hand that was turned off but leaking slightly. With a little detective work, I hope you can figure out what is causing it. I'm sorry I can't be more helpful.
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