the ground; the bird in this respect departing from the usual habit of the Willow Warblers. These notes being intended rather as suggestions for those who desire to know a little about our summer birds, than as a condensed history of the species, I may observe, in concluding this chapter, that those who are anxious to glean further particulars about the Willow Warblers and their allies, will do well to consult an excellent article on the subject by Professor Schlegel, published (in French) in 1851 in the “Proceedings of the Royal Zoological Society of Amsterdam.” [Illustration: NIGHTINGALE] THE NIGHTINGALE. (_Philomela luscinia._) In common with one or two allied species, the Nightingale differs so materially in structure and habits from the garden or fruit-eating warblers (_Sylvia_), with which it has been generally associated, that most naturalists nowadays are agreed in regarding it as the type of a separate genus (_Philomela_). For want of a better English name, and as indicating their haunt, the members of this genus may be called “thicket warblers.” As regards structure, they differ from the Garden Warblers in having the bill less compressed towards the tip, and wider near the gape; the legs much longer and not scutellated, the toes more adapted for walking than perching. In habits they are more retired, concealing themselves in thickets and copses, living a good deal on the ground, where they find the principal portion of their food, and building a loosely-constructed nest on or near the ground, instead of a more compact structure at a distance from it.