Thank you.
We have not use XM on Common Redshank. It is likely XN, ringed on 15-Nov-23 as 1st winter bird. Recorded 25 times since, including 2 sightings from you.
Grey Plover MB should be M8, ringed on 15-Nov-23 as adult. It was recorded 3 times at Mai Po in Nov-23, including your sighting.
Katherine