I was sitting in my computer room and heard a Great Horned Owl. I opened my back door and I could hear two calling to each other. One eventually flew in and landed on an Austrian pine in my back yard. It called a few times and moved on. I assume it was following the other owl. They're gone now but it was an exciting few moments. One of the birds was higher pitched than the other. I know that the higher pitched Canada Goose is male. Does anyone know if the male and female hoot at different pitches and if so which one is higher? Rick Hoyme Hennepin County Plymouth, MN
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