There is a colony of these in a provincial park/lakeshore east of here- I think they have been trying to control or eliminate it, since I have seen large dead patches (haven't been back in the last year or so to see what's going on).Thickets are very dense, and as far as I noticed, had no other plants within them. My impression was that it was not a first choice for birds, since I was there in late fall/early winter and there were lots of berries- most native berries are cleaned off the second they are ripe if not sooner (though again, I am not at that site often
enough to be sure).
Personally, I did not find the taste
medicinal, to me it was more reminiscent of tropical fruit, but I may have only had berries after frost, which usually mellows berries.
I still plan to get some going on the acreage here, but am thinking about siting to make sure they cannot spread anywhere I don't want them- probably with a windbreak along the road on one side (where they would have to grow under spruce to spread that way, and can only add dust protection/privacy enhancement/natural fencing, and would be mowed on the other side....