A short time ago a friend of mine found a Sedge Warbler’s nest near Gloucester with four eggs in it. The following day when we returned to the place the nest contained only three and a Cuckoo’s egg. As I wanted a photograph of a member of the species for the present work, I parted the thick sedge grass and, erecting my camera within a few feet, got everything ready and went into hiding beneath my apparatus. In less than two minutes she returned and, gazing into her home, suddenly grew greatly agitated and began to hammer the Cuckoo’s egg unmercifully with her bill. Fearing that she might break it before I secured a photograph, I jumped up and drove her away, at the same time calling my companion over to take care of the object of her resentment. Directly it was gone she assumed all her native gentleness of manner and sat down upon her own eggs quite happy. [Illustration: MORE, PLEASE!] Although young Cuckoos show so much sagacity in getting rid of any other occupants of the nest in which they have been hatched, they sometimes exhibit great stupidity in other directions. For instance, the young bird shown with his Tree Pipit foster-mother in the illustrations figuring in this chapter did not understand the alarm cry of the little brown bird at all. It did not matter however loudly she cried “danger” outside the nest up to a certain stage in his career, if he heard anything moving he shot up his head and opened his mouth very widely in request of food. Then, again, if a newly fledged Cuckoo happens to be resting on level ground and his foster-mother, say a Robin, Hedge Sparrow or Pied Wagtail, comes along with a supply of food, he has not the sense to accommodate himself to the stature of his wee parent, for, instead of lowering his great dappled head, he rears it as high in the air as he can, and the feeder has to stand on his shoulders, as shown in the accompanying photograph, and literally drop the food down his throat. [Illustration: TREE PIPIT FEEDING YOUNG CUCKOO WHILST STANDING ON HIS SHOULDERS.] The food of adult Cuckoos is insectivorous, and consists largely of hairy caterpillars such as those of the Drinker Moth. The Cuckoo sings upon the wing, and sometimes keeps up its vocal efforts all night long. It has been asserted that only the male cries “Cuckoo,” but this is not the fact, as females have been shot in the act of singing. On the Yenisei its cry is “Hoo-hoo.” Gilbert White, in his delightful “Natural History of Selborne,” says that some Cuckoos sing in D, some in D sharp, and some in C, and that the two former whilst performing together make a very disagreeable duet. The notes of the bird are easily imitated by the human voice, and in the springtime I often amuse my friends by calling individuals into their gardens. [Illustration: clump of flowers] =THE ROBIN.= [Illustration: twig with seed fronds]