Peep peep peep full stop

What the hell is going on?

The peepers are peeping like crazzy. And then they stop. And then I hear a few distant peepers– likely in cotton field ditches– and then like a roaring wave I hear the peepers peeping. And then they stop. Full Stop.

What the hell?

Clearly, the peepers are more sensitive than I.

What are  they sensing?