One of the commonest ways to convert bird sounds into visual code is to use transcriptions into what seem the nearest equivalent human sounds in our own spoken language, e.g. quack, caw, tu-whit to-whoo... Most field guides offer careful transcriptions of the commonest calls & sometimes songs (pictures 1&2 Collins Bird Guide). John Bevis collected such transcriptions in his book „aaaaw to zzzzzd“ (pictures 3-6).
-> see also post above












