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Several females on pickerelweed (see wider photo - two females at once). Feisty bees - when captured in a vial they would chew at the top with their mandibles even after half an hour of captivity, and when chilled they'd recover very quickly and immediately start trying to fly off.

Two years now I've noticed they travel further from their nests to reach this highbush blueberry in the parking lot when there's lowbush in the powerline ROW. Only one male was seen on the lowbush, but all females and some males were on the highbush.

About half a dozen individuals seen on highbush blueberry in a kettle hole bog. The blueberry was very abundant here, in full bloom. These bees were the only visitors to gather pollen, and their sonication was audible!

10 or so nests in a blueberry-dominated forest opening. Most were under the leaf litter so there may have been more. Several males patrolling and trying to get into the nests - no females seen, but they could be heard digging, at least three of them at one time. Site photos added for the GNBees Project.

Small aggregation on a hiking path in the woods. Only two females seen, and only one visible nest entrance (not used by either female), but some nests may have been underneath the leaf litter as one female seemed to disappear under the leaves. Very little flowering in the area - unknown if there are willows in the vicinity but there were red maples.
Additional site photos added for the GNBees Project.

Gyne... was lethargic and unable to fly, though it wasn't cold. Also seemed to be wet/coated with something. Didn't seem to be doing too well - was doing that little twitchy front foot behavior I tend to see in Hymenoptera that have ingested pesticides. Left her on a flower.