Tish wrote:
We never get it together enough to properly control for fruit flies,
so we are planning on avoiding things like pome fruit (apples, pears,
quince, nectarines, peaches, apricots, etc). Likewise, planting
feijoas and quavas would be foolish. We have enough citrus for the
moment (lemon, two limes and two mandarins), so won't be planting any
more citrus (much to the disgust of the local swamp wallaby).

Any ideas? Particuarly, anything that is resistant to fruit fly and
which won't poison native wildlife/birds.

You aren't exactly making it easy for us. No soft fruit, apples,
pears, quinces or citrus. Figs are fruit fly magnets, and besides
their roots can be invasive. You are considering avocados
obviously. Passionfruit would probably do well, although it isn't
actually a tree...