Generally speaking I find that I hear many more woodcock than I see.
At twilight you can see the flight but you can't really see the bird itself.
They have large heads, short necks, and short tails which gives them a bulbous look.
Once they go to ground they can be really difficult to see.
I watched this one go into a clump of grass and still took a minute to find him.
The woodcock is also known as the timberdoodle, Labrador twister, night partridge, and bog sucker.