It was already an amazing week for me and for Manhattan birding in general. I added two life birds: Red Phalarope, on the northeast shore of Randall’s Island on April 26, and Clapper Rail, at the Loch on April 28 (almost certainly the bird released by the Wild Bird Fund after rehab on April 24).
A warm air mass with southerly winds pushed migrant birds farther north, bring many species to the area over a week sooner than usual. I finished April with 20 more birds for the year than I had ever had before at this time.
The biggest surprise of all came this morning at 8:14 a.m., when I received a Manhattan Bird Alert text (from @BirdCentralPark on Twitter, see here to follow) of Least Bittern in a tree high above the Gill. I ran from the Reservoir and saw a handful of birders already eyeing it. Shape, size, and coloring all checked. It was my third life Manhattan bird of the week.
The last recorded appearance of Least Bittern in Central Park was on May 29, 1989 on Starr Saphir’s Ramble walk. Lenore Swenson took note of this bird in her journal. It is much rarer than American Bittern, which is observed in Central Park at least once in most years.