The term twitter admits several uses depending on the context in which it is used ...
In its most general and wide use, the twittering refers to the vibration of the voice in the throat.
In the field of music, to the broken voice that occurs in the interpreter of a song is called a twitter.
On the other hand, sing of the birds, it is also popularly known as twitter. The morning chirp of nightingales is really music to my ears.
And when it comes to human communication, it is called twittering imperfect joints of children when expressing themselves in the first months of life; When the individual is in the pre-linguistic stage, that is, he has not yet learned to speak, a step before doing so is the emission of very particular sounds, that is, twittering is considered the prelude to speech.
Towards the end of the third month of life, a very characteristic reaction arises in the child and of great importance for its development, which is called animation complex; it is a generalized motor reaction, which will be accompanied by the emission of sounds. When the adult, the father, the mother, places the child on his back and close to his face and also talks to him and smiles at him, it will provoke in the child the so-called gurgling; the gurgles are the direct result of stimulation and are considered the first step in learning to speak.
Meanwhile, the term twitter is linked to other terms such as: murmur, hum, gurgle and trill.