sides of the platform, which is somewhat oblong in shape. The thicker ends of these twigs rest on the platform, or the ground on each side of it, whilst the thin tips bend inwards till the two walls almost meet at the top, to make a sort of vaulted thatched roof. The whole forms a sort of rustic arbour, open at either end, so that the birds can run through it. This they delight in doing, and in order that the sticks may offer no obstruction as they dart along, they are careful, when minor twigs branch off from them, to place them so that these point outwards. Having made their bower, the next thing the birds do is to decorate it. Anything they can find that is bright, or gaily-coloured, such as feathers, bleached bones, snail-shells, leaves, flowers, etc., they pick up and bring to their bower. The feathers, or flowers, they hang about the rustic walls, whilst they drop the bones and shells in a heap outside each of the entrances. As the birds are always adding to these collections, and keep up and repair their bowers from year to year, these curious, white, glistening heaps grow and grow, until sometimes they are large enough to fill a cart. Quite a number of birds—perhaps a dozen or more—come to play and sport at these bowers, or summer-houses. They run through and in and out and round about them, chasing one another, and having all manner of fun. The cock of this species is a most beautiful bird, and it is here that he shows off his glossy, blue-black body and velvety wings to the female, who is of a sober green, and not nearly so handsome. It is because the cock’s feathers are so smooth and shining, that he is called the Satin Bower-bird. The female has not this satiny appearance, but, like other ladies, she has to take her husband’s name. The size of the birds is about that of a jackdaw—at least I have seen them in the gardens, and they looked to me almost as large. Mr. Gould, speaking of the bower of this bird, says: “It has now been clearly ascertained that these curious structures are merely sporting-places in which the sexes meet, and the males display their finery and exhibit many remarkable actions, and so inherent is this habit, that the living examples which have, from time to time, been sent to this country, continue it even in captivity. Those belonging to the Zoological Society have constructed their bowers, decorated and kept them in repair, for several successive years.” A gentleman who kept these Bower-birds in captivity, writing to Mr. Gould, says: “My aviary is now tenanted by a pair of satin-birds, which for the last two months have been constantly engaged in constructing bowers. Both sexes assist in their erection, but the male is the principal workman. At times the male will chase the female all over the aviary, then go to the bower, pick up a gay feather or a large leaf, utter a curious kind of note, set all his feathers erect, run round the bower, and become