Exciting birding in new places

Yesterday I took the scenic route home with the intent of checking out a new birding place that my work pal Hillel told me about: an old rail tunnel near a little burg called Coburn, through which Penns Creek flows. There's a trail where the train tracks used to be, and Hillel thinks it might be a good place to see woodcocks. As I've never seen a woodcock, I wanted to swing through there and maybe catch some early evening peenting and displaying.

No such luck on the woodcocks, but while on the scenic route over Brush Mountain, I saw a lifebird: a ruffed grouse, the PA state bird! He was right up on the edge of the little road, looking around. If I'd had my camera out and ready, I would've gotten a great shot, as I was maybe ten feet away from him. But he moved into the brushy cover too quickly for me; I waited to see if I could spot him again, but it was impossible. He mixed in too well. Still--a lifer!

So I drove on to the old rail tunnel, parked, and started looking around. Here are some shots of the old tunnel, hewn directly into the rocks many moons ago:

The moss had grown onto the rock around the entrance to the tunnel:
Here, you can see that while they prettied up the entrance with cut stone, the actual tunnel walls themselves were left natural:

I love seeing moss growing like this; it's so soft and green and alive, with water flowing out of the rocks:

Sigh. So beautiful. While I was looking at the tunnel, I heard a bird sound--a single "chock" that resonated through the woods. I thought it might be a some sort of grouse or a turkey, but I've listened to a lot of those sounds (owls, gamebirds, etc.) and just can't find it. It was a warbly but sharp "chock" sound. Does anyone have any other guesses?

I also saw a first-of-year Eastern wood-pewee; here are my best shots of him:

I thought it might be a phoebe, but the beak and the size were wrong; I'm pretty sure it's a wood-pewee, but if you disagree, please let me know!

I also saw a northern harrier, several brown thrashers, and the usual flurry of American robins, grackles, red-winged blackbirds, European starlings, and American crows.

I can't wait to go there super-early one morning, to see what migrants might pass through. I'm hoping for some good birding there as the migration gets into gear.