Serviceberry is a small tree that the birds adore - if you can put it in the corner where it can get bigger it will be of help. Some of the cultivars can be more shrub-like. And while birds love berries, there are also a great many birds that love insects. Oaks are one of the best trees for caterpillars (not a lot, mind you, just enough for the birds to munch on). Again, could be in the corner if size is an issue. Shrubs that act as host plants for butterflies (like oaks) feed birds even when berries are gone. Viburnums are good but keep cross pollination in mind - you need two viburnums that bloom at the same time which are not identical (so they can't be two of the same cultivar name) to get the best fruit set. Do consider native ones for the best impact. Good fruiting hollies are the winterberry hollies which are deciduous, but they are male/female (as are all hollies) so be sure to choose at least one of each. Elderberries are nice. Birds also are draw to areas that have cover so if you can get an evergreen or two that would help. Here is a link that might be useful: this might be useful

That photo is not of a Rodgersia (it is Brunnera and a shade lover!!) and I'd disagree that rodgersia would be happy in as much sun and reflected heat as the wall would be inclined to receive. It is also not exactly ephemeral in the commonly accepted sense and I fail to see why an ephemeral anything would be suggested for this setting :-) Babs suggestion make a great deal of sense and are well-suited for a sunny, coastal PNW garden as well. But there are many others possibilities that come to mind. A visit to a local garden center would increase your possible choices significantly.

Thsnk you do nych floral uk. i would nit have guessed in a million years. i kept trying to convince myself it was some kind of abelia

I'm not going to be able to get close enough for a good close up. If it's a lilac, then the flowers will be pretty distinct to be able to identify it, right?