One of the drawbacks to being an early northward migrant is that they are subject to the whims of the early spring New England weather. Will it be hot, cold, just right? Raining, snowing? The birds that show up in March are subjected to it all. But they’ve been doing it for generations, so for the most part, they can handle whatever is thrown at them.
Killdeer are one of these early migrants. They mate and nest earlier than most birds, too. So a little snow is no big deal for these “shorebirds.” The snow does make for nice photos, though.