Shaun Harvey is a hero. He found a Dusky Warbler near to the Stone Barges at Rainham.
I headed down on a dismal Sunday morning. It was gloooomy. Staking out at the appropriate location I waited along with a few faithful London birders. The bird began to call. Brief ticks then silence.
It then appeared from the gorse, and flew over to an adjacent clump of gorse and hawthorn. It did that a couple of times.
And that was pretty much it. Rather low-key for a mega London bird.