Mulberries and the precautionary principle

[michael <>]

Dear Paul,

You wrote:
> If you want to attract birds to your garden, plant a Mulberry, the Black-faced
> Cuckoo-Shrikes, Channel-billed Cuckoos, Olive-backed Orioles, Koels and
> Silvereyes all love the fruit.

And all of them then go on to deposit Mulberry seeds, complete with a
dose of fertiliser in the bush.

Before planting anything "for the birds" it is important to know whether
it will result in a degredation of bushland.  Do you have any data on
how readily Mulberries grow from seed or observations of Mulberries in
bushland ? 

Long live the precautionary principle

Michael Norris