The article is pretty light on details as to what makes it "Bayesian". We know that all biological lifeforms can sense and process information to inform their b

The article is pretty light on details as to what makes it "Bayesian". We know that all biological lifeforms can sense and process information to inform their behavior. What makes this computation Bayesian vs Frequentist? Is it something unique to owls or do all lifeforms perform Bayesian analysis to some extent?