White-crowned sparrows are migrating through on their way to the Far North, and they are whistling like anything. They don’t really sing so much as make high-pitched, long-drawn-out whistles in two or three tones.
White-crowned sparrows are migrating through on their way to the Far North, and they are whistling like anything. They don’t really sing so much as make high-pitched, long-drawn-out whistles in two or three tones.
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