The German naturalist Lenz writes that he made some experiments in regard to Shrikes. In one garden he destroyed every Butcher-bird’s nest that he could find, and shot the birds; and there he had plenty of fruit, because the small birds stayed and destroyed the grubs and insects. In another, a larger garden, he allowed just one Shrike to breed. Wasps and other creatures destroyed all the fruit near the part where this Shrike’s nest was. In a third garden Lenz allowed Shrikes to nest freely, with the result that all the insect-eating birds forsook the place, or else were destroyed by the Butcher-birds, and there was no fruit. Writing of the Red-backed Shrike, one of our leading authorities in bird matters notes that in its larder he has seen the bodies of large moths, dragon-flies, mice, and sometimes a small bird from which the head has been wrenched, and many a cockchafer; and Canon Tristam considers that the food of the various species of Shrikes is almost entirely cockchafers, where they are to be had. The Rev. T. Wood again ranks them with the Owls for usefulness. A French naturalist also says they have every right to be placed on the list of useful insectivorous birds. It would seem to depend much on the nature of the district whether this bird is to be welcomed or otherwise. The Red-backed Shrike is 7 inches long. Its whole shape and colouring--still more its habits--are those of a true Shrike. Crown and neck a beautiful grey; mantle reddish-brown; the folded wings show no white patch. Underparts pale rose colour, throat white; across the eyes and towards the ears, is the broad black band. The middle feathers of the tail reddish-brown, the outside feathers white near the root. The breast of the female bird is pale, crossed by brown wavy lines. The upper mandible is serrated and has a slight hook. The nest is usually placed in bushes; it contains five to seven eggs nearly white, with a ring of small darker speckles, sometimes at the larger and sometimes at the smaller end. THE LESSER WHITETHROAT. (_Sylvia curruca._) This simple, modest, agreeable bird is valued and loved by us, because it comes in such a friendly way near our houses and ourselves. It nests in orchards, and more especially in gardens where there are bushes, and charms us in the early spring with its sweet trilling song, “_Lee-lee-lee-lee-lee_.” The little song is quite simple, being just the repetition from six to eight times of the syllable “Leeleelee.” Its call-note is “_tack-tack-tack_.” It keeps the feathers of its head erected whilst singing. Its food consists of all kinds of harmful insects for which it hunts without rest, and is therefore no less useful than the Titmouse. It feeds also on various berries, but without doing any harm. The hen shows great self-sacrifice in rearing her brood, amongst which is often found a stranger--the Cuckoo.