Brown creeper


Not flashy but still a favourite.
Brown creeper, Rondeau Provincial Park, Ontario, Canada, Dec 4, 2018

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.
source - https://www.allaboutbirds.org/guide/Brown_Creeper/

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