Killdeer

Steve Forman photographed barn swallows and a killdeer at Hopkinton State Park.

Gail Sartori photographed this killdeer in Acton.

Steve Forman photographed a killdeer at Hager Pond in Marlborough.

Steve Forman photographed a great blue heron and a killdeer at Hager Pond in Marlborough.

Steve Forman photographed a great blue heron, a killdeer, and a solitary sandpiper at Hager Pond in Marlborough.

Steve Forman photographed an killdeer at Hager Pond in Marlborough.

Steve Forman photographed a killdeer and a spotted sandpiper at Hager Pond in Marlborough.

Steve Forman photographed Canada geese, a double-crested cormorant, a killdeer, and mallards at Hager Pond in Marlborough.

Gail Sartori photographed a black-capped chickadee at a nest box, a killdeer, a mute swan, and a rose-breasted grosbeak in Maynard.

Joan Chasan photographed a killdeer and a yellow-rumped warbler in Westborough.