Ian
I too have this problem and like you selectively collect them for the compost. The compost heap is struggling to keep up at present so rather a lot are still uncollected. I usually collect up the wild cherry as the leaves are large and sit wet on other plants, The birch; I collect those on the lawn, the stony scree and any excessive heaps and from the paths, the rest either get collected in the course of general tidying throughout the year or left for the worms. The oaks (the golden form of the american red oak; the leaves are larger than our native oaks) again get selectively removed, leaving the rest tend to blow under hedges where they get left. Some subsequently get removed in the spring/summer when I want something to dilute a lot of fresh grass cuttings which tends to go slimy. Likewise beech. Rowans seem sufficiently small that many vanish on their own. The resulting compost from all this is sieved after 3 years and used as a mulch.
Brian Wilson Aberdeen