Bob Pelkey (jkrnm5)advised me that these are now known as Common Gallinule (Gallinula Galeata). None of my many bird books show this. They all include only the Purple Gallinule. I discovered on the internet that indeed there had been a split off in 2011. These look the same to me as the ones I saw in The Netherlands some years ago and I have not been able to determine the difference in the two, other than a name and territorial change as follows.

Gallinula Chloropus = Eurasian Moorhen in the Eastern Hemispher. (Formerly Common Moorhen)
Gallinula Galeata = Common Gallinule in the Western Hemispher. (Formerly Common Moorhen)

They are still Common Moorhen to me. Thanks for the heads-up Bob.