A strange otter encounter, not once but twice, resulted in a Curious North question for the Masked Biologist, who talks about the North American river otter in this week’s Wildlife Matters. Today I have the pleasure of responding to an interesting inquiry that came in through Curious North here on WXPR. The listener wrote: “Twice this week I've heard really loud strident calls that sound almost but not quite like a raptor. Best described as chirping, but loud. Once near the Davenport street