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California's Wilderness
FEBRUARY 2006
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Made for Each Other
Photograph by Tim Laman
Co-evolution is on vivid display in the Sierra Nevada foothills, where an Anna's hummingbird feeds from a scarlet monkey flower. Hummingbirds are virtually the only creatures that visit this flower species, says Michigan State biologist Douglas Schemske. Both species benefit: The bird gets fed and the flower gets pollinated. Why no bees? "Bees may have been rare or absent when the monkey flower evolved," says Schemske. It's also possible the plants were widely dispersed, more easily reached by birds than bees, which tend to take shorter trips.
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Camera: Canon EOS 1V
Film Type: Fujichrome Provia 100
Lens: Canon 300mm f/2.8 with 1.4x converter
Speed and F-Stop: Approximately f/4 @ 1/250
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Weather Conditions: Clear
Time of Day: Afternoon
Lighting Techniques: Three strobes balanced with ambient light.
Special Equipment or Comments: The camera and lights were set up and pre-focused on the flower. I waited for a hummingbird to come and triggered the shutter with a cable release.
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