My concern would be with free feeds from me he'd bring even more of his mates.
Personally, I don't believe in feeding birds, but I do plant things in the garden that give food for honeyeaters etc, particularly in winter. That is why the removal of the Erica flowers is so irritating, as the Eastern Spinebills and Red Wattle Birds adore them. Last year for the first time the Rosellas got into the buds on the Grevilleas as well, munching the whole flowerhead off each time. Still only a small plant as well, so it meant that there was nothing left for anything else to utilise. At least there are usually other things around that they can feed on instead, but in winter there is always a bit more limitation on feeding possibilities.
I love having the rosellas in our garden (we have water for them in birdbaths etc) but I just wish they wouldn't eat other things. Then again, I get limited damage on my roses and I know other people who have to net their roses or the rosellas totally destroy all the shoots and buds. So I should be thankful for small mercies at least!
