Sanderlings are small birds.
The Sanderling is a common winter visitor to Maui from its breeding grounds in Alaska. It frequents coastal mudflats and sandy beaches, often in large groups. As the waves recede the birds probe beach sand, being chased by the oncoming waves. You can see them frantically running back and forth in search of food, or casually probing shallow waters of wetlands like shown in this post.
To see where they are along with many other birds in Maui, see Nature and Wildlife Pics for their winter home. They travel great distances from their summer homes in the Canadian Tundra to Maui.
They are some of the world’s most abundant shorebirds, but the non-breeding younger birds will often stay at wintering grounds through the summer avoiding the long trip to the Arctic nesting grounds. They do travel long distances without rest.
I did learn that they are both monogamous and will pair off in one female with two males. Lucky girl? Hmmm. Males are territorial running off competitors, but the mate will often commence chase to protect territory. More birds of Maui coming up.