Thanks Jonathmartinez!
But may I ask why the book - "The Birds of Hong Kong and South China" describes Kentish Plover (charadrius alexandrinus) as follows:
"In all plumages, differ from Littled Ringed Plover by dark legs and white wing bar and from sand plovers by white collar."
Whereas Taiwan Bird Book P172 of charadrius alexandrinus shows the leg colour varies from pink to greyish black.