By six in the morning I had moved to East Wood, back towards the way into the reserve. Winter storms had toppled several of the trees and their roots had pulled up huge clumps of earth. By now you could hear the first traffic from Mildenhall and Lakenheath. A solitary bird-watcher appeared. He carried a camera with a huge telephoto lens balanced on one shoulder and he looked at me in a friendly way. "What have you seen?" he asked.
I don't know much at all about wild birds and have found it nearly impossible to learn to identify them in real life from just listening to recordings. Perhaps such things need to be learned in context. Even so, and despite the discomfort of trying to sleep outdoors on a bench, I would do this again with little hesitation.
Joist Fen dusk chorus • New Fen dawn chorus • East Wood dawn chorus