When nandinas grew to 7 feet tall, ancient spireas grew even taller, wisteria and catbrier (Smilax) covered the whole thing. Rather than deal with it, I called it 'The Bird Tangle' and it did have a few birds, mostly sitting in the dogwood tree above.
For a brief period each March, the Bird Tangle had a claim to fame: white wisteria hung over nandinas. Eventually catbrier covered everything.
This is the same view as in my recent post on Dogwood, where everybody was kind enough to ignore the 'Bird Tangle' in front of the dogwood in bloom:
Today it disappeared. The nandinas and spirea were cut down forever. We dug the roots of those, wisteria roots and huge catbrier tubers. It opened the view, looking toward the road and took away a screen behind which intruders could hide. All that is left is the ancient dogwood tree that wisteria and smilax continuously tried to climb.
Once upon a time, MIL tried to disguise the gas tank with Nandina and Spirea. The Propane tank was long ago moved to the back out of sight, where it should have been all the time. The bird tangle was a remanant of her efforts to disguise everything, usually futile. The only thing left of the shrubs that were intended to hide the cattle pen by planting them as closely as possible to the building is a single variegated euonymous that I kept for sentiment in the yellow rose bed. I don't hide anything, I plant in lines of sight so there's something to look at before you reach the offending structure. There's nothing to the south beyond the newly opened site except a grove of pecan trees in a former cattle pen, not unattractive in my view.
I haven't talked to anybody about it yet, but I'm hopeful of putting in a white crape myrtle in the line of sight where an old catalpa stump stands behind the fence.
Oh! Don't worry about the birds. They have plenty of other tangles all around with tastier food than this one provided.