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Rh "rother's sides." And again I wonder why there are not more professional tree-creepers, why countries so rich and defenceless are not more invaded, in the name of something or other high-sounding—evolution will here serve the turn. But, in spite of this abundance, the tree-creeper does not quite confine himself to searching the bark of trees, for I have seen him, on one occasion, dart suddenly out and catch a fly, or other insect, in the air, returning immediately afterwards to his tree again. To my surprise, I cannot find this in my notes, but, as my memory is quite clear upon the point, I mention it. This is another method of procuring food, which, as an occasional practice, is widely disseminated amongst our smaller birds, and here again one wonders why it has only become a fixed habit with the fly-catcher. However, I have seen a male chaffinch dash from the bank of a river and catch may-flies in mid-stream, sometimes a little and sometimes only just above the surface of the water, several times in succession, so that, in this case also, we see the possible beginnings of another species.

I have forgotten to admire the tree-creeper—I mean as a thing of beauty. To do so is a very refined sensation, he is so neutral-tinted and halfshady. One is an æsthete for the time, but the next blue-tit dethrones one, for one has to admire him too, and he, with his briskness and his Christian name of Tom, is hardly æsthetic. The hardiness of these little creatures—I am speaking here of the tits, but to both it would apply—is wonderful—quite wonderful. They are downy iron, soft little colour-flakes of nature's very hardest material. It is now—for