The chickadee in the snowbank: A 'canary in the coal mine' for climate change in the Sierra Nevada mountains

These tiny songbirds have extraordinary memories for the tens of thousands of spots where they hide food. But that doesn’t help when heavy snow blocks their access.

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Sierra Nevada ,California ,United States ,America ,Vladimir Pravosudov ,Benjamin Sonnenberg ,Adrian Harpold ,University Of Nevada ,North America ,Mountain Chickadee ,Spatial Memory ,Chickadees ,Radio Frequency Identification ,Identification Numbers ,