Glorfindel had grace to spare, so he didn't judge Bucky's climbing form. At least he was able to climb up. Not every human Glorfindel had encountered over the years could.

He grinned at Bucky. "But, can you move as fast as an Elf?" He handed him a board, then put a hand on the tree trunk to check the placement with the tree. This was how elves could build their talan without nails. "Please place that right there, where the branches now yoke," he said, pointing to the fresh location.