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 the ...

, long and wide, separating Bird Island from the west end of South Georgia. 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 lies within Bird Sound.

References

Sounds of Antarctica {{SouthGeorgia-geo-stub