Mysterious Holes in Lawn: Wildlife Foraging, Not Disease

Diagnosing Small Bare Patches in Spring Turf

A physician in north-central Massachusetts noticed 1–2 inch "holes" in the grass on lawn edges, with dormant grass twirled around bare circles. The lawn consists of Kentucky bluegrass, perennial ryegrass, and fescue. No soil disturbance—just missing grass blades in a distinct pattern.

Wildlife, Not Pathogens

This pattern is classic bird or squirrel foraging. Birds (robins, starlings, grackles) probe for insect larvae, earthworms, or grubs, creating small divots. Squirrels may dig for buried nuts or insects. The "twirled" grass is displaced by beaks or paws. No fungal disease or insect pest creates this specific symptom.

What to Do

• Observe: Watch the area at dawn/dusk to catch the culprit.
• Check for grubs: Peel back a section of turf. If you find >5–10 grubs/ft², consider treatment.
• Tolerate minor damage: Spring foraging is temporary; grass usually recovers.
• Avoid pesticides: Unnecessary insecticides harm beneficial insects and soil life.

The expert consulted a wildlife specialist for confirmation. Since the homeowner is wildlife-friendly, the best approach is patience—the lawn will fill in as temperatures rise and growth resumes.