a little hawk which preys almost exclusively on voles, mice, insects, etc., is a valuable friend to the farmer, and certainly no enemy to the gamekeeper. Yet large numbers are destroyed by the latter; for as Charles St. John, himself an ardent sportsman, wrote in his well-known “Wild Sports of the Highlands”:[16] “It is impossible to persuade a keeper that any bird called a hawk can be harmless; much less … that a hawk can be useful.” And much the same still applies, it is shameful to relate, to other extremely useful species, such as the barn-owl--which farmers ought to encourage--and the tawny-owl, etc. Worse than this: incredible as it may sound, there are several well-authenticated cases of _nightingales_ having been destroyed by keepers because their singing kept the pheasants awake at night! And Mr. Hudson, among other instances, records a case where a whole heronry was blotted out, the birds being shot on their nests after breeding had begun, because their cries disturbed the pheasants; and yet another, where a whole tract of woodland estate was denuded of doves, woodpeckers, nuthatches, blackbirds, missel and song thrushes, chaffinches, and many other smaller birds, all of which were shot, any nests found being also destroyed. The keeper said he was not going to have the place swarming with birds that were no good for anything, and were always eating the pheasants’ food.[17] Though these, of course, are extreme cases, they are notable as showing to what lengths this folly may be carried--what monstrous sacrifices are made to the insatiable Moloch of game-preserving.