It is a delicate little creature, the breast of a faint and dull yellowy green, the wings the lightest brown, and there is a pencilled streak over the eye.

The beak is so slender it scarce seems capable of the work it should do, the legs and feet so tiny that they are barely visible.

Hardly has he perched than the keen eyes detect a small black speck that has just issued from the arch, floating fast on the surface of the stream and borne round and round in a tiny whirlpool.
He darts from the branch, hovers just above the water, and in a second has seized the black speck and returned to the branch.

A moment or two passes, and again he darts and takes something--this time invisible--from the water.

A third time he hovers, and on this occasion just brushes the surface.