This dipper was as far upstream as I got (after Nick had gotten his airport shuttle). Presumed adult by song and morphology. Not sure we can say what sex, though; do female dippers sing?
Video of the bird in ML142250531, ML142251011, ML142251811 posted here: https://youtu.be/wT6hCcr_7R0 and here: https://youtu.be/Y5w5JZFoGh8
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