The double-maypole bower is an awe-inspiring structure, sometimes reaching a height of eight feet and spreading 13 feet across. The proportions of this particular bower are not so grandiose, though the builder has put a great deal of effort into the structure.
Spanning the bower's two spires is a drooping vine, upon which the hard-working bird has tightly woven fine sticks. As is customary, he has left the center of the vine clear to serve as his perch, and has decorated the vine and maypoles with yellow lichen, flowers, and berries.
Which of the following bowerbird couples belongs to this bower?
