The nest is made in the ground, a hedgebank being the situation preferred, and is round and domed, with an opening at the side. Dry grass, leaves, and moss are the materials used in its construction, the cavity being plentifully lined with feathers. The eggs are six, pure white, spotted and speckled with brown and brownish purple. Willow-Wren. Phylloscopus trochilus. Upper plumage bright olive-green; a narrow streak of yellow over the eye; under parts yellowish white, palest in the middle; feathers of the legs yellow. Length, nearly five inches. * * * * * The willow-wren, or willow-warbler, is one of the earliest of our summer songsters to arrive, usually following the chiffchaff--which it resembles in size and general appearance--by a few days. During the last week of March, if the weather be not too cold, its delicate strain may be heard in sheltered situations in the southern parts of England, and by the second week in April it is one of the most frequently heard songs throughout the length and breadth of the land. Not only is this species very much more generally diffused than its two nearest relations--the chiffchaff and wood-wren--but it is met with in a much greater variety of situations--on commons, in hedgerows, gardens, woods, and plantations. Yet, in spite of its abundance and wide distribution, it is nowhere a familiar bird to the country people; the small, delicate voice does not compel attention and is well-nigh lost in the summer concert that has so many loud, jubilant strains in it.