Growing daylength is the primary trigger for birds’ nesting and the migration that might precede it. But for the great horned owls, it is the longer nightlength that awakens their haunting winter music.
Great Horned Owls
Growing daylength is the primary trigger for birds’ nesting and the migration that might precede it. But for the great horned owls, it is the longer nightlength that awakens their haunting winter music.