One cricket

Did you know that only crickets with wings can made that high pitched screeching noise.. that's what the lady at the pet store told me when i was buying crickets...she scooped up a bunch and handed them to me and said there was only one cricket wing wings so if i fed him to kiaba today the rest of the crickets would be silent.....what do cricket wings looks like... cause lemme tell you i looked through all the crickets and none of them had wings!! and yet all night long...it reminds me that he's there....chirping all night long...-.-....