turned rapidly in various directions, the eye peering into the rocks and crannies of the ghylls in search of any skulking prey. Soon this silent hunting was all changed. Above us was a ledge covered with blood, bones, and feathers. We were close to the nest. Just as we were discovered one of the falcons went "whizz" past our face, almost touching it. Then it gives a wild yelp, as in one gyration it shoots upwards, and screams round the crag. Again the bird dashes along the cliff, and is joined by the female, who from her nest has been quietly watching us. The peregrine's outstretched wings measure three feet, and it makes a velocity of fifty-seven miles an hour. One at the above rate flew one thousand three hundred and fifty miles. So great is its power and speed of flight that a bird belonging to Colonel Thornton was seen to cut a snipe in two in mid-air. Falcons will occasionally search after their prey when it has been driven to seek shelter from the closeness of pursuit. The goshawk, which falconers use mostly for taking hares and rabbits, frequently does this, and will watch for hours when its game has taken to cover. As well as ground-game the goshawk poaches pheasants and partridges, numbers of these being killed by the bird in its wild state. Through a wooded country it pursues its quarry with great dexterity; and it possesses great powers of abstinence. During the day it remains solitary in dark fir-woods, coming out to feed at morning and evening.... We advance over the heather; and there, skimming towards us, is a large hawk--a harrier. As it flies near the ground, working as a pointer or setter would do, the species cannot be doubted. Now it stoops, glides, ascends, stoops again, and shoots off at right angles. Rounding a shoulder of a hill, it drops in a dark patch of ling. A covey of young grouse whirr heavily over the nearest brae--but the marsh harrier remains. It has struck down a "cheeper," and is dragging its victim to the shelter of a furze-bush. A male and female harrier invariably hunt in consort, and afford a pleasant sight as they "harry" the game, driving it from one to the other, and hawking in the most systematic fashion. They thoroughly work the ground previously marked out, generally with success. In hawking the quiet mountain tarns their method is regulated according to circumstance. In such case they not unfrequently sit and watch, capturing their prey by suddenly pouncing upon it.