News tagged with hummingbirds
Maple seeds and animals exploit the same trick to fly (w/Video)
Jun 11, 2009 |
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The twirling seeds of maple trees spin like miniature helicopters as they fall to the ground. Because the seeds descend slowly as they swirl, they can be carried aloft by the wind and dispersed over great ...
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Flowers shape themselves to guide their pollinators to the pollen
Biology /
Apr 03, 2007 |
4 / 5 (2) |
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Why do flowers specialize on different pollinators? For example, both bats and hummingbirds pollinate plants in tropical forests; why adapt to just one instead of using both? Biologists often assume that tradeoffs contribute ...
Long, sexy tails not a drag on male birds
Mar 12, 2009 |
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The long tails sported by many male birds in the tropics look like they're a drag to carry around and a distinct disadvantage when fleeing predators, but experiments by University of California, Berkeley, ...
Researchers discover hummingbird secret
Biology /
Nov 29, 2006 |
4.1 / 5 (27) |
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University of Alberta researchers have pinpointed a section in the tiny hummingbird's brain that may be responsible for its unique ability to stay stationary mid-air and hover.
Anna's hummingbird chirps with its tail during display dives
Biology /
Jan 30, 2008 |
4.4 / 5 (14) |
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The beeps, chirps and whistles made by some hummingbirds and thought to be vocal are actually created by the birds' tail feathers, according to a study by two students at the University of California, Berkeley.
Bird brains suggest how vocal learning evolved
Biology /
Mar 12, 2008 |
4.8 / 5 (4) |
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Though they perch far apart on the avian family tree, birds with the ability to learn songs use similar brain structures to sing their tunes. Neurobiologists at Duke University Medical Center now have an explanation for this ...
Bitter-tasting nectar and floral odors optimize outcrossing for plants
Biology /
Aug 28, 2008 |
5 / 5 (1) |
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Animals "personally" bring their gametes together – seeking out sexual partners, mating, fertilizing, and reproducing. Plants, however, are sessile organisms and require the help of a third party, the pollinator, ...
Study of flower color shows evolution in action
Jun 29, 2009 |
4.4 / 5 (5) |
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Scientists at UC Santa Barbara have zeroed in on the genes responsible for changing flower color, an area of research that began with Gregor Mendel's studies of the garden pea in the 1850's.
Noise pollution negatively affects woodland bird communities
Jul 23, 2009 |
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A new University of Colorado at Boulder study shows the strongest evidence yet that noise pollution negatively influences bird populations, findings with implications for the fate of ecological communities ...
Hummingbird flight an evolutionary marvel
Jun 22, 2005 |
4.2 / 5 (12) |
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Humans with an appreciation of beauty may have marveled for millennia at the artistry of a darting hummingbird, but scientists announced today that for the first time they can more fully explain how a hummingbird ...
Gravestones Talking through Time
Space & Earth / Earth Sciences
Dec 08, 2009 |
4.4 / 5 (8) |
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(PhysOrg.com) -- A visit to your local graveyard can provide not only a history lesson, but a science lesson as well. Historians know that gravestones can reflect the lives of people whose memories are lost ...
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