Greater necklaced Laughingthrush lingering at Fa Peng

Out this aft; few birds - no migrant warblers - but did see a Greater-necklaced Laughingthrush at the top of Fa Peng Valley. I've seen what was surely this bird a few times over the winter, in the valley, usually with Black-faced Laughingthrushes; today it was alone, called or weakly sang. May be an escapee from captivity - this is rather scarce bird of HK woodland, chiefly in New Territories; resident; also get captive birds on the lam.