Tom, according to the information of this link, there are more than 66 species of plovers. We have (beach) plovers on our beaches as well, but I don't know whether they are similar to the by you depicted ones.
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I saw the link Cornelius , I did not know that there were that many species of Plover. I may stand corrected as they seem difficult to tell apart in many circumstances but we do have signs on the local beaches warning not to walk in certain areas of the shore during breeding season for the piping plover..Thank You.