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User / Bill Bowman
Bill Bowman / 932 items

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Shooting stars (Dodecatheon pulchellum) are my favorite wildflowers. They are essentially primroses with reflexed petals. The petal positioning seems to make landing on the flower more difficult for potential pollinators. However the shooting stars rely on a "buzz" pollination strategy where the positioning of the pollinator's (usually bumble bees) flight muscles causes tightly held pollen to fall off the anthers and land on the legs and body of the pollinator or directly on to the stigma of the same flower. Buzz pollination occurs in other species with similar flower morphology, such as some plants in the tomato family.

Two shot stack to catch both flowers in focus but keep a shallow dof

Tags:   Dodecatheon pulchellum backlighting bokeh buzz pollination Shooting stars

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Sunset this evening was mostly colorless until very late, when an unexpected band of deep purple/ magenta drifted across the clouds and then quickly disappeared. The peaks are part of the Continental Divide, delineating the Pacific (far side) and Atlantic (this side) drainages, mirrored in the very still Red Rock Lake of the southern Rocky Mountains. (iii)

Tags:   sunset magenta minute Red Rock Lake southern Rocky Mountains Navajo Peak Apache Peak Shoshoni Peak Pawnee Peak Paiute Peak Mount Toll Mount Audobon Colorado

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A panorama stitch of 4 shots looking across Jasper Canyon toward Island in the Sky (left), the La Sal Mountains in the center (soon to be slathered with snow the next day), and Canyon Rims Recreation Area on the skyline. The sun angle is less than ideal to show off the myriad of visible canyon rims that give the Maze District its name.

Tags:   Canyonlands National Park Maze District Island in the Sky La Sal Mountains Jasper Canyon Chimney Rock trail Utah public land for public use

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Alpine buttercups (Ranunculus adoneus) are amazingly hardy, initiating the growth of their flowers while still buried by snow. The flowers absorb radiation from the sun and melt the snow around them, getting a jump on the very short alpine growing season. The flowers also track the sun as it moves across the sky, warming the flower, potentially attracting pollinators, and gaining energy through photosynthesis. This flower had already emerged from the snow which has melted around it, but snowmelt water from upslope had frozen overnight, creating a layer of ice surrounding its stem.

Tags:   Alpine buttercup Ranunculus adoneus southern Rocky Mountains Colorado Niwot Ridge

N 322 B 3.3K C 51 E Jun 10, 2017 F Jun 14, 2017
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One of the two male Broad Tailed Hummingbirds (Selasphorus platycercus) vying for dominance at my feeder lowers his air speed while approaching his landing spot. The bright iridescent throat feathers (gorget) of adult male Broad Tail Hummers appear from crimson red to reddish-orange, depending on the condition of the feathers, becoming less brilliant with age.

Tags:   Broad Tailed Hummingbird Selasphorus platycercus gorget in-flight


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