Bird sightings as reported to the Massachusetts Audubon Society:
Spring migrants being reported in good numbers this week were ruddy duck, red-throated loon, double-crested cormorant, pectoral sandpiper, yellow-bellied sapsucker, blue-headed vireo, purple martin, Northern rough-winged swallow, barn swallow, blue-gray gnatcatcher, ruby-crowned kinglet, Louisiana waterthrush, black-and-white warbler, and white-throated sparrow.
►Rowley: A white-faced ibis continues to be seen in the small salt pans near Pikul’s Farm along Route 1A, where it has been consorting with a group of approximately 50 glossy ibises.
►Topsfield: Noted at the Topsfield Fair Grounds were two blue-winged teal, a Northern shoveler, and 29 green-winged teal.
►Ipswich: A cattle egret has been frequenting the fields at the Buttonwood Farm on Route 133. As many as 52 glossy ibises were also counted this week.
►Plum Island: Reports from Parker River National Wildlife Refuge included four Northern shovelers, 30 Northern pintails, 12 lesser scaup, 10 ruddy ducks, a pied-billed grebe, 15 greater yellowlegs, many migrant Northern flickers and hermit thrushes, a rusty blackbird, and three purple finches.
►Nahant: There was a yellow-bellied sapsucker, 16 hermit thrushes, a brown thrasher, a Louisiana waterthrush, and a white-crowned sparrow.
►Concord: At Great Meadows National Wildlife Refuge, recent sightings included 28 wood ducks, two pied-billed grebes, a great egret, two black vultures, a bald eagle, five broad-winged hawks, two Virginia rails, three American coot, and 11 palm warblers.
►Lancaster: Reported from the Bolton Flats were small numbers of both greater and lesser yellowlegs, a pectoral sandpiper, and 19 Wilson’s snipes. At the nearby Pine Hill Grasslands, two vesper sparrows were observed.
►Duxbury: A shorebird count at Duxbury Beach included five black-bellied and 10 piping plovers, two American oystercatchers, 100 sanderlings, and 700 Dunlin.
►Miscellaneous: Reports this week included 1,500 red-throated loons at Nantucket; a sooty shearwater off Gooseberry Neck in Westport; a tricolored heron at Allen’s Pond in South Dartmouth; a winter wren and a Louisiana waterthrush at Crooked Pond in Boxford; a Louisiana waterthrush at the Chestnut Hill Reservoir ; a yellow-throated warbler in Newton; and a lark sparrow at Danehy Park in Cambridge.