* Crowing: This is a loud, booming call that is used by males to attract females during the breeding season.
* Chuckling: This is a softer, more melodious call that is used by males and females to communicate with each other during the breeding season.
* Hissing: This is a high-pitched call that is used by females to warn males that they are not interested in mating.
* Quacking: This is a low-pitched call that is used by both males and females to communicate with each other during the non-breeding season.
In addition to these vocalizations, capercaillies also communicate with each other through body language. For example, a male capercaillie may fan his tail or puff up his feathers to make himself look larger and more intimidating to potential rivals.
Capercaillies are able to hear a wide range of sounds, from low-frequency sounds such as the booming of a male capercaillie's crow to high-frequency sounds such as the hissing of a female capercaillie. This ability to hear a wide range of sounds allows capercaillies to communicate with each other effectively in a variety of different environments.