bo* Ululation.
klam* Outcry.
klik* Click.
kok* Rooster cackle.
krep* Creak, groan, discordant sound.
pipj* Chirp, tweet, pipe.
plawd* Snap, clap, physical impact. Does not mean "applause" in the sense of approbation.
sibil* Sibilation, hissing, wheezing.
stert* Snort, snore.
strid* A harsh, grating sound.
susur* Whispering, muttering.
swej* Whistle.
ulul* Ululation. Animal sound.
vag* Cry, wail. As that of a newborn.