There was a big mouse bloom at the ranchette where I house sit. Nothing like the '93 Australian plague https://youtu.be/mBDz3TPfA9w?si=egfSeq1ZIc1mRAHH , but it was worrisome. The owner had already sent hundreds of them to their maker.
Over the last month he'd seen a noticeable decrease and was pondering the reason why.
Was it due to the owl that had taken up residence, a red racer occasionally seen slithering by or a mouse pandemic?
And then he spotted the most likely cause.
Out of the corner of his eye he saw something moving fast and more intelligently than your average rodent.
The carnivorous shrew, and where there's one there's bound to be more. They have to eat 3/4 of their body weight every day and reproduce like rabbits.
Nature to the rescue.