From Tom Halliwell:

Hi Jon,

On the Great Swamp-Watchung Ridges count today (Saturday) Sean Sime and Andy Lamy found a Wilson’s Warbler at the Chatham Sewage Treatment ponds. Coming from Chatham you pull into the parking lot for the tennis center on Passaic Avenue just after crossing Route 24. Drive all the way in and park. The ponds will be in front of you on the other side of a fence. You’ll see a long “wall” of bamboo on the left in which the bird spent much of the time. It tended to work the opposite side of the bamboo because that is where the sun is in the early morning. That means the sun is coming directly at you making observation doubly difficult. You can’t go around to the opposite side because of the barbed-wire fence. Most looks were very brief.

All the best,
Tom Halliwell