Wheezing Squawks 2018-07-15T19:48:18Z Squawks are found in pulmonary fibrosis of various causes, particularly in hypersensitivity pneumonitis. Other causes are detected in pneumonia and bronchiolitis obliterans. Squawks are short inspiratory wheezes of less than 200 ms duration and are also known as squeaks. Acoustic analysis shows the fundamental frequency varying between 200 and 300 Hz. Squawks usually occur in late inspiration and are often preceded by late inspiratory crackles.