Hmmm, the post title might seem misleading and you are looking for a sandpiper with spots!
but, not so in this case as this is an adult non-breeding spotted sandpiper. You are more likely to see the spotted version in the spring during their breeding season. When their breeding is over with the spots disappear and the spotted sandpiper's appearance looks very much like this bird in the picture. This is the fall version in our region.
I am linking today to Eileen's Saturday Critters meme which can be found atviewingnaturewitheileen.blogspot.ca
A very happy first day of Fall to everybody.