Deep in the woods of Phippsburg, Maine, near the Center Ponds Trailhead on Parker Head Road, the rocks themselves have birds on them. Artist Kevin Sudeith has carved a sprawling collection of petroglyphs into the stone here — more than ten separate images — and it ranks among his biggest single-site works to date.

The twist: these aren't ancient markings or abstract spirals. Sudeith carves photorealistic, life-sized portraits of birds that actually live around Phippsburg. Great blue herons, cardinals, tree swallows, thrushes, loons — each rendered so precisely that hikers regularly do a double-take, mistaking a carving for the real thing. Some panels even capture movement and interaction: a bird chasing a dragonfly, geese lifting off. The carvings were designed to echo the landscape around them, so walking the trail feels a bit like stepping into a field guide that's been chiselled into bedrock.

There are a couple of curveballs too. Look out for a Mars helicopter and a Zumwalt-class destroyer worked into the rock — recurring motifs Sudeith drops into sites across the country, something of a signature that makes his work instantly recognisable. It's an odd, charming collision of Maine wildlife and cutting-edge tech, all done in a medium we usually associate with Bronze Age cliff walls.

The petroglyphs sit on land protected by the Phippsburg Land Trust, whose trail network threads through the woods and past the carved stones. That means the site is free to visit, maintained as a conservation area, and easy to combine with a proper walk. The setting matters to the art: Sudeith thinks of these works as time capsules, recording what lives around each rock in a language anyone can read, centuries from now.

For travellers, this is exactly the kind of low-effort, high-reward detour that makes a Maine road trip memorable. Phippsburg sits on the state's midcoast, near Bath and not far from the better-known Popham Beach State Park, so you can pair the trail with a coastal day out. No tickets, no queues, no crowds — just a quiet woodland walk with a surprise around every boulder. It suits families, birders, hikers, and anyone who likes their art with mud on their boots rather than on a gallery wall.

If you go, wear proper footwear, bring binoculars if you have them (the real birds are out there too), and take your time — the fun is in spotting each carving and working out which species you're looking at before checking whether it's stone or feather.