| However, San Salvador has only two nectarivorous bird species so the pollination of P. bahamensis is constrained by bird species availability. |
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| Those honeyeaters, four of which are primarily nectarivorous, were most abundant in the medium and poor sites. |
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| Hurricanes also commonly devastate populations of nectarivorous birds, probably because these birds are left with few nectar or fruit resources. |
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| The nectarivorous hummingbirds evolved a derived mode of hovering flight that allows them to remain virtually motionless in front of flowers. |
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| For nectarivorous birds, energy-expensive aggressive behavior may not be worthwhile for defending low nectar levels. |
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| Exposure to predators may be one factor that limits the foraging activities of small nectarivorous birds at this site. |
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| Those values are extremely low compared to those of granivorous and omnivorous bird species, but higher than those of nectarivorous species. |
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| Frugivorous and nectarivorous birds have lower endogenous N losses and lower N equilibrium than granivorous and omnivorous birds. |
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| These two species are the only nectarivorous birds on the island. |
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| This foraging profile overlapped with those of all anthophilous insect families, all bee subgenera, and all species of nectarivorous birds that were encountered. |
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