Bird Sound () is a hazardous but navigable

sound In physics, sound is a vibration that propagates as an acoustic wave, through a transmission medium such as a gas, liquid or solid. In human physiology and psychology, sound is the ''reception'' of such waves and their ''perception'' by ...

, long and wide, separating Bird Island from the west end of

South Georgia South Georgia ( es, Isla San Pedro) is an island in the South Atlantic Ocean that is part of the British Overseas Territory of South Georgia and the South Sandwich Islands. It lies around east of the Falkland Islands. Stretching in the east ...

. The names "La Roche Strait" and "Bird Sound" were used interchangeably for this feature on charts for many years. Bird Sound, which takes its name from nearby Bird Island, is approved on the basis of local usage.

Hornaday Rock Hornaday Rock () is a rock lying in Bird Sound, west-southwest of Cape Alexandra at the west end of South Georgia. The feature appears on charts dating back to the 1930s. It was recharted by the South Georgia Survey in the period 1951–57, and n ...

lies within Bird Sound.

References

Sounds of Antarctica {{SouthGeorgia-geo-stub