WBird vocalization includes both bird calls and bird songs. In non-technical use, bird songs are the bird sounds that are melodious to the human ear. In ornithology and birding, songs are distinguished by function from calls.
WConspecific song preference is the ability songbirds require to distinguish conspecific song from heterospecific song in order for females to choose an appropriate mate, and for juvenile males to choose an appropriate song tutor during vocal learning. Researchers studying the swamp sparrow have demonstrated that young birds are born with this ability, because juvenile males raised in acoustic isolation and tutored with artificial recordings choose to learn only songs that contain their own species' syllables. Studies conducted at later life stages indicate that conspecific song preference is further refined and strengthened throughout development as a function of social experience. The selective response properties of neurons in the songbird auditory pathway has been proposed as the mechanism responsible for both the innate and acquired components of this preference.
WHakawai, also Hokioi in the North Island, was to the New Zealand Māori people, a mythological bird that was sometimes heard but not usually seen. It is now associated with the nocturnal aerial displays made by Coenocorypha snipe.
WIn Abrahamic and European mythology, medieval literature and occultism, the language of the birds is postulated as a mystical, perfect divine language, Adamic language, Enochian, angelic language or a mythical or magical language used by birds to communicate with the initiated.
WFor about three years the composer Wolfgang Amadeus Mozart kept a pet starling. The starling is remembered for the anecdote of how Mozart came to purchase it, for the funeral commemorations Mozart provided for it, and as an example of the composer's affection in general for birds.
WThe syrinx is the vocal organ of birds. Located at the base of a bird's trachea, it produces sounds without the vocal folds of mammals. The sound is produced by vibrations of some or all of the membrana tympaniformis and the pessulus, caused by air flowing through the syrinx. This sets up a self-oscillating system that modulates the airflow creating the sound. The muscles modulate the sound shape by changing the tension of the membranes and the bronchial openings. The syrinx enables some species of birds to mimic human speech. Unlike the larynx in mammals, the syrinx is located where the trachea forks into the lungs. Thus, lateralization is possible, with muscles on the left and right branch modulating vibrations independently so that some songbirds can produce more than one sound at a time. Some species of birds, such as New World vultures, lack a syrinx and communicate through throaty hisses. Birds do have a larynx, but unlike in mammals, it does not vocalize.
WVinkensport is a competitive animal sport in which male common chaffinches are made to compete for the highest number of bird calls in an hour. Also called vinkenzetting. It is primarily active in Flanders, the Dutch-speaking region of Belgium.