Indeed, if the superfluous songsters did not go away (and the Wild Birds' Protection Act remained in force), we should be smothered with thrushes. I know, for instance, of a little "place" in the country, some thirty acres all told, garden, shrubberies, orchards, spinneys, and meadow, where birds are tempted to come by the planting of fruit bushes and strawberry-beds in all directions, by the numbers of elder trees and mountain ash set out, by the encouragement of blackberries and dog-roses wherever they can be allowed to grow, and where birds are tempted to stay in winter by liberal scatterings of grain-foods and table-scraps. Within this little estate there were one year forty nests of thrush and blackbird. Now supposing these birds bred only once in the year, which is very improbable, and reared only three birds apiece, which is equally so, and that half were killed or died during the year, there would then be left twice as many thrushes as in the year before. Forty pairs would become eighty; eighty, a hundred and sixty; a hundred and sixty, three hundred and twenty, and so on till five years later there would be over ten thousand pairs of thrushes (allowing all along for the same excessive proportion of casualties), breeding on thirty acres, and if each pair hatched five birds, there would be fifty thousand thrushes all together! So it is well that thoughtful Nature leads off vast colonies every year. Those that happen to stop to rest on Heligoland stop there for good and all, for the Heligolanders eat them. Those that get farther fare no better, for everybody eats them. Belgian and Dutchman, Frenchman, Spaniard and Portuguese, German, Swiss, Italian. And it is really a [Illustration: THE WILD SWAN, QUITE AN ISLAND FOR THE LITTLE BIRDS] mercy that they do. For if all the thrushes that leave us were to come back again, the consequences would be simply disastrous. Suppose all the human emigrants from Great Britain were to come back again! The population of these islands would be sitting three deep on top of one another. No, the thrush is not a migrant in the sense that the nightingale is or the turtle-dove. By a wise dispensation of Nature the superfluous increment is drafted off annually. But the same number that sing in the garden in March sing every month in the year till March comes round again. There is, I confess it, something very pleasing in the thought that a particular turtle-dove, all the time that it was enjoying itself in the palm-gardens by Cairo, or among the arbutus and olives of Athens, should keep in its memory a particular tree in my garden in England, and in spite of all temptations should come straight back to it every summer. For such fidelity I am cordially grateful, and I appreciate the dainty little bird's soft purring in the copse all the better for its pretty compliment of remembrance.