I had 3 pair (well I had 6 birds anyway) in 1973. They were purchased from a Maltese(?) breeder/dealer who operated 'Lane Cove Aviaries' in Sydney. Paid $70 per pair, which was quite a bit of money in those days . . A new Holden station wagon was $3 600
I exchanged birds for another MM from a different source later that year . . and when it arrived it was a hybrid. Obviously one of its parents was MM but the other one certainly was not . . not happy, Jan and he did not get to join his half-relatives
Anyway They were housed in a large aviary about 40' x 20' (
13 x 6m).
A pair of Madascar Weavers, which I was assured were peaceful and would be 'no problem' with the MM's as they were both robust species, was purchased
8 birds in a large heavily planted aviary. They got along well for about a fortnight and then in one day the 2 Maddies wiped out 6MM's while I was at work
I have never seen MM's advertised since . . and if they were anywhere they may have been in SA which was home to some great old bird breeders and was the last refuge of a number of finch species that are no longer withus
OOPS . . got my metrics a bit wrong