I think that this is only the second claim of a 'heard' Asian Lesser Cuckoo in Hong Kong so please submit the record formally (only two or three other records). Recording would be great but if not please try to describe the call in words.
Regarding ajohn's comment I wonder if Asian Lesser Cuckoo could also parasitise prinias or tailorbirds: this post inspired me to look at my copy of 'Cuckoos, cowbirds and other cheats' (try it - a great combination of birding and 'science') and (some) cuckoos are not too stereotyped not to opportunistically try new hosts. That said, Tai Mo Shan has been well enough covered in the last half century (personally I did fieldwork there from 1995 - 1998) - I don't think that we have overlooked a regular breeding population!
Mike Leven
