I saw killdeer nesting at Powder Mill Pond in Greenfield NH. The pond was very low water because they drained to repair the dam so there are a lot of exposed banks and flats that are not normally there. It looked like a different place to me.
The killdeer (which I normally see hanging out in parking lots!) had made the mudflats near the plants their new home. Nice. I don’t know how long it takes to rear the young but I hope they are ready to leave by the time they fix the dam.