The Esther Currie Wildlife Management Area is located east of NH-11 between the two Elkins Road exits in New London. There are two observation blinds on Beaver Pond.  Most of the photos here are from the shore of Beaver Pond, the blinds, or along the Davis Path.
From Jim Block

In and around the beaver pond/marsh: Canada Goose, Wood Duck, Green and Great Blue Herons, Common Yellowthroat, Red-winged Blackbird, Belted Kingfisher, Eastern Kingbird.

Along the trails: several warblers (Ovenbird, Black-throated Blue, Black-throated Green, Yellow-rumped, Pine), Eastern Wood-Pewee, Cedar Waxwing, Yellow-bellied Sapsucker, Hermit Thrush, Blue-headed Vireo, Red-breasted Nuthatch, Purple Finch, White-throated Sparrow.

Officially named the Esther Currier Wildlife Management Area, this site was formerly called the Low Plain Wildlife Management Area. The trail is a 1.25-mile-long old road through the woods to Mountain Road on the southern end. A large beaver pond/marsh parallels the trail, and there are several short branch trails to overlooks and blinds at the edge of the pond. There is also a small pond on the left about a mile from the parking area.

From I-89 exit 11 in New London, go east on NH-11 (King Hill Road) for about 2.3 miles and turn right on a dirt road across from a small cemetery to the parking area, where trail maps are available.