Adult Description
- Small waterbird.
- Sooty-colored head and body.
- Thin, dark bill.
- Yellow eyes.
Immature Description
Bill is pale. Eyes brown, turning whitish as it gets older. Head has white stripes, gradually darkening. Throat white.Relative Size

between robin and crowMeasurements
- Both Sexes
- Length: 8.7-10.6 in (22-27 cm)
- Weight: 2.9-6.4 oz (81-182 g)