churring

/CH ER1 IH0 NG/
verb
  1. 1

    To make the prolonged trilling sound of an insect (e.g. a grasshopper, a cicada).

verb
  1. 1

    To make the low vocal sound of some birds.

Source: https://en.wiktionary.org/wiki/chirr, https://en.wiktionary.org/wiki/churr, https://en.wiktionary.org/wiki/churring