First, a note on Birding during a pandemic. It seems like it is an "in" activity.
https://www.nytimes.com/aponline/2020/05/02/business/ap-us-virus-outbreak-birding-boom.html
The warblers showed up this week. Last Sunday I caught two palms at Jenks and a black and white at Rolling Meadows.
The Boxborough Birding email list provides a lot of good tips. I followed there lead to the Acton Arboretum on Monday and ran into Canute , an expert birder. He pointed me towards the Warbler action. Lori and I went back the next day and say a couple of Norther Parulas, a Black and White, and plenty of Yellow Rumps. Went back Wednesday and could only find the Yellow Rumps. Friday we switched to Jenks. One Yellow Rump in the parking lot, and then nothing.
Andy's walks are cancelled. Mt. Auburn is closed. We'll see how the rest of May turns out. We need to get at least one or two big outings.