Brown creeper.

 While the creeper isn't rare in our area, they can be hard to find as they blend in very well.

Rondeau Provincial Park, Ontario, Canada, October 22, 2024.

Certhia americana
Brown Creepers burn an estimated 4–10 calories (technically, kilocalories) per day, a tiny fraction of a human’s daily intake of about 2,000 kilocalories. By eating a single spider, a creeper gains enough energy to climb nearly 200 feet vertically.

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