He is a rather interesting fellow, this double, whom I need not have mistaken for the mocker at all, he is so different a bird. Yet he is about the same size, white beneath and with a good deal of gray in his upper works. Bill and tail differ from those of the mocker; still, at a distance of a hundred feet a casual glance did not enlighten me. I am still wondering if there is method in this quiet substitution. The double is a loggerhead shrike, the Southern butcher-bird. He feeds upon small birds, and he might well choose the perch which the mocker had just vacated as a most desirable hunting stand. Small birds flitting back and forth in the early morning would hear the mocker singing and know that he would never harm them. Then an hour or two later, flying by in perfect confidence, they would find themselves in the crooked beak of the loggerhead, to be impaled on one of the thorns of the yucca beneath the perch and there dissected at leisure, or left to wait while the loggerhead takes his ease, “hung” as we say of ducks and snipe. Does the loggerhead take the mocking bird’s perch with forethought, bearing the opportunity in mind and trusting to the resemblance, or is it just a case of a convenient perch with both birds? He who can read the loggerhead’s mind may be able to tell me. So far I have failed to catch the butcher bird at his butchery, and though I look doubtfully at those convenient Spanish bayonet tips as I pass, I find I am the only innocent thus far impaled on them. Of these small birds that the loggerhead might capture the very name is legion. All warblers seem to be here, and if they are difficult to keep track of in the North, here they are well nigh impossible. I find a live-oak tree full of uncountable flocks. I get the glass on one bird, and before I can begin to note his characteristics he has flitted like a shadow and another with far different markings is in his place. Birds that one knows at a glance may thus be noted at a glance, but the rarer varieties crowd in upon these until the mind in trying to distinguish and remember becomes inextricably confused and finally gives up in despair. I am beginning to believe that every small bird in Chapman’s “Birds of Eastern North America” is in convention on the west bank of the St. Johns. Some wiser and more farsighted man than I will have to tell how many varieties of warblers, finches, sparrows, and flycatchers may be seen on one good day in early December on the lower banks of the big river of Florida.