Macgillivray, however, gives, on the authority of an excellent observer, an instance of three magpies successively killed on the same nest which were all females; and another case of six magpies successively killed whilst sitting on the same eggs, which renders it probable that most of them were females, though the male will sit on the eggs, as I hear from Mr. Fox, when the female is killed. Sir J. Lubbock’s gamekeeper has repeatedly shot, but how many times he could not say, one of a pair of jays (_Garrulus glandarius_), and has never failed shortly afterwards to find the survivor rematched. The Rev. W. D. Fox, Mr. F. Bond, and others, have shot one of a pair of carrion-crows (_Corvus corone_), but the nest was soon again tenanted by a pair. These birds are rather common; but the peregrine falcon (_Falco peregrinus_) is rare, yet Mr. Thompson states that in Ireland “if either an old male or female be killed in the breeding-season (not an uncommon circumstance), another mate is found within a very few days, so that the eyries, notwithstanding such casualties, are sure to turn out their complement of young.” Mr. Jenner Weir has known the same thing to occur with the peregrine falcons at Beachy Head. The same observer informs me that three kestrels, all males (_Falco tinnunculus_), were killed one after the other whilst attending the same nest; two of these were in mature plumage, and the third in the plumage of the previous year. Even with the rare golden eagle (_Aquila chrysaëtos_), Mr. Birkbeck was assured by a trustworthy gamekeeper in Scotland, that if one is killed, another is soon found. So with the white owl (_Strix flammea_), it has been observed that “the survivor readily found a mate, and the mischief went on.”