Crickets are an insect one hears in the summer. Often in the old cartoons they were played when I was growing up (and TV was free), mostly in Looney Tunes, when someone is on a stage and the audience does not respond, we - the viewer - would hear these crickets.
It was a way of me letting you know I was scratching my head, wanting to respond, but am unable to do so. Hence, the crickets ...
I suppose I should have explained that I did not want you to mistaken my lack of a response as an unwillingness to acknowledge your question.
A stone or a rock does not suffer consciousness. Did you come across a passage in WWR where Schopenhauer compares what motivates a stone, such as the force of gravity, to the more complicated internal forces which motivate human beings and other animals?