To be clear, I planned on putting the bath in the middle of the yard there with the strawberries. How close should the perch/cover be? If you take a look at the design plan, I'll have a 8x8' hedge of Elaeagnus down the side, the Camellia will mature to 15x12' in the corner, and I'll have the two rows of huckleberry 4x4' flanking the bath. Is that enough? If not, I could build some kind trellis or arch around the bird bath and grow some vines there.
@MariposaMaid, the alpine strawberries I have are very productive, but it's constant as opposed to flushes. Overall I get more strawberries, but in small, steady harvests: probably about a cup every other day at its peak with 60 plants. As far as care, they're much better behaved than common strawberry. They form clumps instead of runners, and they're hardy as heck. They tolerate significantly more shade and are way less fickle about water. Best of all, they're evergreen! No pesky winter clean up. Very low maintenance.