With a view to finding out whether the deceptive path of the bird that “tells its name to all the hills around” is a smooth one or not, some years ago I had four wooden eggs made and painted to resemble those of the Song Thrush. I tried my counterfeits upon several different species, such as Starlings, Song Thrushes, and Grasshopper Warblers, and deceived them straight away without the slightest trouble, but when I attempted to impose upon a Ringed Plover, whose eggs I found in a little declivity on a shingly beach, she detected the fraud at once, and tapping my dummy eggs with her bill, turned round and walked away in disgust. In order to prove how easily some birds are duped, I may mention that two lady friends of mine have, for the last three or four seasons, taken a clutch of Starling’s eggs out of a hole in a stable wall, and replaced them by one common fowl’s egg, and that on each occasion the foster-mother has successfully hatched out a chick. [Illustration: A STORY IN THREE CHAPTERS: A YOUNG CUCKOO AND HIS TREE PIPIT FOSTER-MOTHER.] The young Cuckoo arrives into the world without a scrap of down or the sign of a feather on its dusky, ugly little body. Very soon after it is hatched it begins to show signs of great restlessness and energy, endeavouring to throw out whatever else there may be in the nest in the shape of eggs or young. Nature has equipped the little monster well for its murderous task, by providing a hollow between its broad shoulders for the reception of its victims. It makes great efforts to get beneath whatever else is in the nest in which it has been hatched, and when it gets an egg or chick upon its back, with raised wings, head depressed, and a foot firmly planted on either side of the nest, it rears its burden and casts it out. [Illustration: FOSTER-MOTHER TREE PIPIT COMING WITH FOOD FOR YOUNG CUCKOO.] This wonderful performance was first observed by the great Dr. Jenner of vaccination fame, and afterwards confirmed by the observations and wonderfully accurate pictures made by my friend Mrs. Blackburn. Curiously enough, her daughter, Miss Blackburn, found the Meadow Pipit’s nest from which her mother saw the rightful owners ejected by the young Cuckoo and also the nest belonging to the same species figured on page 3 of this work. Sometimes two young Cuckoos are hatched out in the same nest, and then a great struggle takes place between them for possession. Very odd things occasionally occur in regard to Cuckoo’s eggs. I have found one, perfectly fresh, covered over with moss and down inside a Hedge Sparrow’s nest wherein the bird had laid none of her own. I have known one lie untouched outside a Meadow Pipit’s nest, but whether left there by the layer or cast forth by the owner of the structure it is impossible to say. [Illustration: TREE PIPIT ABOUT TO ALIGHT ON YOUNG CUCKOO’S BACK WITH FOOD. PHOTOGRAPHED IN 1/500 OF A SECOND.]