The nest is usually placed among reeds on the ground, sometimes on the bank at the edge of the pool, occasionally among roots of trees, or long grass, or on branches overhanging the river, when there is danger of the water rising and overwhelming the nest. This instinctive forethought is, however, equalled, if not surpassed by the ready ingenuity of these birds when such a danger unexpectedly arises, as the following account by Mr. Selby will show: "During the early part of the summer of 1835, a pair of Moor-hens built their nest by the margin of the ornamental pond by Bell's Hill, a piece of water of considerable extent, and ordinarily fed by a spring from the height above, but into which the contents of another large pond can be occasionally admitted. This was done while the female was sitting; and as the nest had been built when the water-level stood low, the sudden influx of this large body of water from the second pond caused a rise of several inches, so as to threaten the speedy destruction of the eggs. This the birds seem to have been aware of, and immediately took precaution against so imminent a danger; for when the gardener, seeing the sudden rise of the water, went to look after the nest, expecting to find it covered, and the eggs destroyed, or at least forsaken by the hen, he observed, while at a distance, both birds busily engaged about the brink, where the nest was placed, and when near enough he clearly perceived that they were adding, with all possible dispatch fresh materials to raise the fabric beyond the level of the increased contents of the pond, and that the eggs had by some means been removed from the nest by the birds, and were then deposited upon the grass, about a foot or more from the margin of the water. He watched them for some time, and saw the nest rapidly increase in height, but I regret to add that he did not remain long enough, fearing he might create alarm, to witness the interesting act of replacing the eggs, which must have taken place shortly afterwards, for upon his return in less than an hour, he found the hen quietly sitting upon them in the newly-raised nest. In a few days afterwards the young were hatched, and, as usual, soon quitted the nest and took to the water with their parents. The nest," continues Mr. Selby, "was shown to me soon afterwards, and I could then plainly discern the difference between the new and the older part of the fabric."