Tag: "hummingbird" at biology news

University of Alberta researchers discover hummingbird secret

... of Psychology in the Faculty of Science, compared hummingbird brains to 28 other bird species, obtained from the...ecision than a helicopter. It is critical that the hummingbird remain perfectly still as it feeds itself while darting in and out of flower blossoms with pinpoint ...

Red is for hummingbirds, yellow for moths

...archers suspect the recent increase in San Diego's hummingbird population, fueled by the growth of suburban developments and gardens, will eventually favor the red over the yellow variety. "Hummingbirds are now three times as dense inland as they were on the coast 50 years ago," said Joshua Kohn, an associate pr...

With a sense of timing, hummingbirds know when they've last emptied a flower

...plies, it would be very efficient if a territorial hummingbird could also remember when it last emptied a specific flower, so as to plan when to return to next harvest nectar. Returning too early would result in a wasted trip. Returning too late might result in another animal's taking the nectar. Thus, accurate ...

Ultra-fast camera captures how hummingbirds hover

...scientists have now determined the aerodynamics of hummingbird flight. These latest data disprove conclusions fro...rprised to find that the up stroke in the hovering hummingbird was much less active than the down stroke. This finding provides new insight into evolutionary trend...

Hummingbird flight an evolutionary marvel

...r the first time they can more fully explain how a hummingbird can hover. Using a powerful technology that was o..., an assistant professor of zoology at OSU. "But a hummingbird is a bird, with the physical structure of a bird and all of the related capabilities and limitations...

Hummingbirds lose power at high altitudes

...ies. Though only 75 species are represented in the hummingbird family tree published in PNAS, he actually has com...rs set out to answer some puzzling questions about hummingbird flight, which is among the most power-hungry activities of any animal, bird or otherwise. Altshuler ...

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(Date:5/23/2013)... of genomic DNA around nucleosomes in the cell ... team of Ludwig-Maximilians-Universitaet (LMU) in Munich now describes ... locally displaced from nucleosomes for transcription. , In ... the cell nucleus, wrapped around disk-shaped particles called ... different histone proteins and accommodating two loops of ...
(Date:5/23/2013)... cerebral palsy with autologous cord blood. Following a cardiac ... boy had been in a persistent vegetative state ... treatment with the cord blood containing stem cells, the ... learned to speak simple sentences and to move. "Our ... the long-held doubts about the effectiveness of the new ...
(Date:5/23/2013)... microbial pathogens are growing increasingly resistant to the conventional ... Wisconsin scientists has synthesized a potent new class of ... infections. , Writing online in the Journal of ... University of Wisconsin-Madison chemistry Professor Helen Blackwell describes agents ... Staphylococcus aureus , a bacterium at the root ...
Breaking Biology News(10 mins):Biochemistry: Unspooling DNA from nucleosomal disks 2First successful treatment of pediatric cerebral palsy with autologous cord blood 2University of Wisconsin chemists find new compounds to curb staph infection 2
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