MA - Mourning Warbler.....Northfield

 

Mourning Warbler - Caldwell Road, Northfield, Franklin Co., MA. September 14th, 2021.

The last two days have seen a distinct swing towards slightly later season migrants in Northfield with Swainson's Thrush, Northern Waterthrush, Yellow-rumped Warbler and White-throated Sparrow (8) all making their first appearances at Caldwell Road fields. In addition, up to 25 Common Yellowthroats and 5 Lincoln's Sparrows both showed obvious increases over the 13th and 14th. A couple of late migrants also turned up with two Yellow Warblers (together) and a Willow Flycatcher on the 13th. 

Lincoln's Sparrow - Caldwell Road, Northfield, Franklin Co., MA. September 13th, 2021.

Mourning Warbler - Caldwell Road, Northfield, Franklin Co., MA. September 14th, 2021.

But in general, warbler numbers and diversity remain quite low for this time of year. All the more rewarding then to have good views of a calling Mourning Warbler on the 14th, in my view something of a county rarity on fall migration. In fact, I've actually had more luck with Connecticut Warbler over the years though the tiny handful of Mourning Warblers I've encountered tended to be bolder and more cooperative. 

Mourning Warbler - Northfield Meadows, Northfield, Franklin Co., MA. September 18th, 2020.

Historical image, also from Northfield in mid-September. 

The 14th also produced a 'heard-only' Connecticut Warbler that called just once from a dense patch of Jewelweed, totally catching me off guard as I walked a mere five paces from my car at the start of the day. Despite much effort and patience, it couldn't be coaxed into view. While I'm pretty hesitant to call Connecticut Warbler by sound only the loud, distinct 'pwik' call was close enough to be sure and I'm not at all surprised that the bird didn't show given the mercurial nature of the species. 

MA - Connecticut Warbler.....in Northfield!

Connecticut Warbler - Caldwell Road, Northfield, Franklin Co., MA. September 10th, 2021. Probably first-winter. 

September brings many avian riches to Massachusetts and has to be one of the most keenly anticipated months of the year for local birders. Whether it be the mass migration of Broad-winged Hawks at established hawk watch sites, or the ever present chance of finding Buff-breasted Sandpipers and other cool shorebirds among local flocks of Killdeer, every day of the month has something to offer and even just an hour outside can be time well spent. But for me, September in Western Massachusetts can only mean one thing - migration of Connecticut Warblers! The species is not an especially rare transient but can certainly be regarded as a scarce passage migrant. It's overall status coupled with skulking and unpredictable behavior make it one of the most sought-after warblers at this time of year. Within the Pioneer Valley, the flood plains of Hadley and Hatfield in Hampshire County receive the lion's share, almost all of them in reported in September. 

The situation in Franklin County is a little different with far fewer reports and only one (that I know of) actually photographed (by Josh Layfield on Sep 29, 2019). This morning I finally laid a personal ghost to rest when I shared three fantastic minutes with a Connecticut Warbler in Northfield. It flushed up simultaneously with a Common Yellowthroat providing a perfect comparison in flight. Thankfully my eyes tracked the larger, more hulking, shorter tailed bird until it perched in the shade and simply looked at me as if it were offended that I'd accidentally flushed it! Moreover, after three or so minutes of perching silently it suddenly began calling allowing me to grab a few audio clips of the distinctive, yelping 'pwik' calls. Shortly afterwards it dropped down never to be seen again.....but I still lingered hoping for more views.

Ironically, it wasn't a busy morning for landbird migrants with Common Yellowthroat and Connecticut Warbler being the only migrant warblers that I could find during a solid hour of effort.  I have seen Connecticut Warbler in Franklin County before but never well enough to attempt record shots making this morning a different experience altogether. 

In the evening a quick check of the flats at Hell's Kitchen found 7 Least Sandpipers and single Pectoral and Solitary Sandpipers amid half a dozen Killdeer, plus 15 or so Wood Ducks.