Tag Archives: Nucifraga columbiana


This gallery contains 4 photos.

Coevolution occurs when two or more species interact so that the evolution of both is affected by the selective pressure each exerts on the other. Mutualism is when the interaction of two species contributes essential benefits to the other. Mutualism … Continue reading

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Whitebark Pine

This gallery contains 8 photos.

Whitebark pine (Pinus albicaulis) grows in subalpine and alpine regions up to the tree line – from 6,000 to 12,000 feet in elevation. It grows on exposed ridges, broken bare rock and shallow rocky soils. This cold, windswept home with … Continue reading

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Clark’s Nutcrackers at Medicine Lake

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Nearly two years ago Leonard and I were surprised to find Clark’s nutcrackers (Nucifraga columbiana) at Ash Creek (see “Clark’s Nutcracker” 11-02-11 for a discussion of this grey and black bird). . A bird that prefers higher elevation conifer forests, … Continue reading

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Song Sparrow

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I went back to Ash Creek (Lassen County CA) to again look for Clark’s nutcrackers (Nucifraga columbiana). None to be found! For about ten minutes I did watch a song sparrow (Melospiza melodia) feeding along the creek shore under the … Continue reading

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Clark’s Nutcracker

This gallery contains 3 photos.

Following our first snowfall of the season Leonard and I were at Ash Creek (Lassen County CA). We were pleasantly surprised to see two Clark’s nutcrackers (Nucifraga columbiana) collecting ponderosa pine (Pinus ponderosa) seeds. In over twenty years, this is … Continue reading

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