Anyone with access to Carey et al 2001 has this information, but to respond to thinfor's query, what the 1974 HKBR considered the first record must have been the currently unsupported record of one shot at Chuk Yuen in September 1969.
Carey et al 2001 and Chalmers 1986 both also include reference to one shot at Fanling on 25 October 1931 (considered the first record by Chalmers but later considered unsupported) - obviously the date for that one looks excellent, and if we disregard the 1969 record but include the 1931 one, this would mean that all five records for this species have been within a nine day period from 23-31 October.
Mike Turnbull.
