Brief timeline for WA
1912 - 1986 Trapping of finches was legal by licensed trappers
1952 Restricted to Kimberley District
1960 Overseas export of all native wildlife prohibited by Commonwealth Govt
1973 Trappers to keep detailed records
1976 Trapping of Yellowrumps prohibited
1981 Trapping of Zebra finches prohibited
1982 Trapping of Gouldian finches prohibited
1986 Quotas introduced on all other species
1987 All finch trapping probibited (presumably at the close of the 1986 season)
1952 - 1986 'Problem finches' could be destroyed by property owners but not trapped for sale . . (Sound familiar??)
SOURCE: Franklin DC, Burbidge AH, Dostine PL. 1999. The harvest of wild birds for aviculture: an historical perspective on finch trapping in the Kimberley with special emphasis on the Gouldian Finch.
Australian Zoologist. 31:92-109.
Thanks for the help with URL . . tried to post it but couldn't