PIED-BILLED GREBE

6. Podilymbus podiceps. 13.5 inches.

In any plumage this species cannot be mistaken for others, because of its stout compressed bill and brown iris; all the others have red eyes. In summer the bill is whitish with a black band encircling it; the throat is black; the eye encircled by a whitish ring; the breast and sides are brownish-gray. In winter they are brownish-black above and dull white below, with the breast and sides washed with brown. Young birds have more or less distinct whitish stripes on the head.

Notes.—A loud, ringing “kow-kow-kow-kow (repeated many times and ending in) kow-uh, kow-uh.”

Nest.—Of decayed rushes floating in reed-grown ponds or edges of lakes. The pile is slightly hollowed and, in this, the 5 to 8 eggs are laid; the bottom of the nest is always wet and the eggs are often partly in the water; they are usually covered with a wet mass when the bird is away. Brownish-white (1.70 × 1.15).

Range.—Whole of N. A., breeding locally and usually in pairs or small colonies.

LOONS—Family Gavidæ

LOON; GREAT NORTHERN DIVER