Beyond the meadows we came face to face with the marsh itself, and plunged in to show the Banker and the Architect our marsh hawk's nest. On the way back the Artist made a discovery. Waist-deep among the sedges, with the tiny marsh wrens chipping and bubbling all around him, he suddenly espied a round ball made of green grass fastened to the rushes with a little hole in one side. "The nest of the short-billed marsh wren!" he declared loudly. We hurried to him. The nest was empty, but, as it was early for the wrens to be laying, this fact had no effect on his triumph. We admired the nest, the bird, and the discoverer freely--all except the Architect, who lingered behind the rest of us, regarding the nest with much suspicion. Suddenly he noted a movement in the grass, and as he watched, a tawny little meadow mouse climbed up the grass-stems and popped into the hole in the side, to find out what this inquisitive race of giants had been doing to his house. It was pitiful to see the Artist. At first he denied the mouse. Then, when it dashed out in front of us, he claimed that its presence had nothing to do with the question of the ownership of the nest. "Isn't it possible," he demanded bitterly, "that a well-behaved meadow mouse may make a neighborly call on a marsh wren?" "No," replied the Architect decisively; and we started away from the discredited nest. Later on, the Artist had his revenge. We were hunting everywhere for the bittern's nest. Suddenly, as the Artist stepped on a tussock, a large squawking bird flew out from under his foot. No wonder she squawked. He had stepped so nearly on top of her that, as she escaped, she left behind a handful of long, beautifully mottled tail-feathers, unmistakably those of an English pheasant. The nest was at the side of the tussock, entirely covered over with the arched reeds, and contained fifteen eggs, three of which the clumsy foot of the Artist had broken. They were of a chocolate color and, curiously enough, almost identical in color and size with those of the American bittern, except that the inside of the shell of the broken eggs was a light blue. The nest itself was nearly eight inches across and about three inches deep, made entirely of grass. Hurriedly clearing away the broken eggs, we called the Architect from the far side of the marsh. He hastened up, took one look at the nest, and then told us solemnly that this was one of the most unusual occurrences known in ornithology. Three pairs of bitterns had joined housekeeping and laid eggs in the same nest. It was hard on the Architect that we should have flushed probably the only bird in the world whose eggs are almost identical in color and size with those of the American bittern, and it was not until the Artist produced the pheasant's tail-feathers that our friend would admit that there was anything wrong with his theory.