The Subalpine Warbler, very similar to its cousin the Dartford Warbler, was stirring up trouble at Portland. We turned up and didn't have the ideal birders start. It just didn't want to show itself. People were only having short one second glimpses, too close to get bins on it. We chased the bird around just about every bush in the area. Patience pays off though. After much perseverance and running by us, the bird finally settled in a photography friendly bush.