White-rumped Sandpipers 4 June 12 Mfd Pt

A series of photos and a video of some White-rumped Sandpipers at the Francis St spit of Milford Point on 4 June 12.  Birds of North America says this about their migration:
This small Nearctic sandpiper migrates from its principal breeding ground in the Canadian Arctic to the southern extremities of South America, one of the longest animal migrations in the Western Hemisphere. Much of its migration is made in a few, long, non-stop flights, each of which can last as long as 60 hours and transport these birds up to 4,000 kilometers, powered by extensive body fat. Such fat reserves are laid down at key migration staging areas—wetlands where food is especially abundant—making this bird particularly vulnerable to loss of strategic habitat.