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Most owls are nocturnal, and they use their voices to establish territories and attract mates in the dark. Several species begin nesting during as early as midwinter, which is one reason why you can often hear them in fall and winter, when most other birds are quiet. For more owl sounds, check out Voices of North American Owls, available through our Macaulay Library. This comprehensive audio guide is highly sought after and no longer availabl
