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Hummingbirds as pollinators of flowers in the red-yellow segment of the color spectrum, with special reference to Penstemon and the open habitat.


Hummingbirds as pollinators of flowers in the red-yellow segment of the color spectrum, with special reference to Penstemon and the open habitat.



Desert Plants 3(3): 156-170



Evidence indicates that hummingbirds preferentially visit flowers in the red-yellow segment of the color spectrum. These red-yellow flowers are the ones most highly visible to hummingbirds against an open sky, in sparsely populated regions, or in other areas of high light intensity characteristic of open habitat.

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