‘Cocktail-party effect’ “..The Guillemot’s hearing is so good that they can cut through the wall of noise, and single out those calls that really matter. This is literally a life and death situation, for unaccompanied chicks die. Natural selection has produced a hearing system that enables both adult and young guillemots not just each other’s cries, but to distinguish them from all the extraneous cries around them. The way birds do this is by filtering and ignoring irrelevant noise, focusing instead only on those sounds that matter both for identifying their own species, and also for identifying specific individuals. The ability to focus on one particular voice or song against a hub bub of background noise is known as the cocktail-part effect…’ Book: Bird Sense #bird #bookillustration #guillemot #cocktailpartyeffect https://www.instagram.com/p/CTHosw_pXfR/?utm_medium=tumblr
