Daily non-political popular news in brief.

Anna's hummingbird chirps with its tail during display dives

Many of the world's smallest hummingbirds, including the West Coast's Anna's and the East Coast's ruby-throated, execute display dives to seduce females and drive away intruders. A characteristic chirp at the bottom of the Anna's dive, thought by many to be vocal, has now been shown to result from a split-second flaring of the tail feathers. UC Berkeley tests prove that tail feather vanes act like a reed in a clarinet to produce the beep.

Read more »

Keywords: anna, hummingbird, chirps, tail, display, dives, chirp, dive

« Previous | Next »

Similar news on "Anna's hummingbird chirps with its tail during display dives":

1. Tail singers
   08-25-2007 · Science News Online
   The male Anna's hummingbird impresses females and intimidates other males by making a whipping sound with its tail feathers.
   Similar news · Read more »
   
2. Beaked Whales Perform Extreme Dives to Hunt Deepwater Prey
   10-19-2006 · Woods Hole Oceanographic Institution (WHOI)
   A study of ten beaked whales of two poorly understood species shows they dive much deeper and longer than reported for any other air-breathing species, a finding of particular interest since beaked whales stranded during naval sonar exercises have been reported to have symptoms of decompression sickness.
   Similar news · Read more »
   
3. Adult Survivors Of Childhood Cancer Face Long-term Health Problems
   10-14-2006 · ScienceDaily
   Survivors of childhood cancer may face long-term health problems well into adulthood, as reported in a multicenter study of over 10,000 adults who survived a childhood battle with cancer. One of the co-authors of the Childhood Cancer Survivor Study is a long-standing pioneer in the field. Anna T. Meadows, M.D., and colleagues at the Children's Hospital of Philadelphia were the first researchers to investigate the late effects of childhood cancer, starting in the mid-1970s.
   Similar news · Read more »
   
4. JOULE II rockets launch with success
   01-19-2007 · EurekAlert!
   From Poker Flat Research Range north of Fairbanks, four NASA rockets launched into an aurora display over northern Alaska, starting at 3:29 a.m. Alaska Standard Time. Scientists hope to learn more about electrical heating of the thin atmosphere from about 60 to 120 miles above Earth's surface with the launch of these rockets. The project is called JOULE II.
   Similar news · Read more »
   
5. Cannibalism of the young allows individual fish to specialize
   05-22-2007 · EurekAlert!
   Whitefish, Arctic char, threespine stickleback and some sunfishes display quite discrete groups living in the same lakes but utilizing different food resources in order to survive. The phenomenon is called "resource polymorphism." Why don't all species show this pattern? Early cannibalism is found in all species displaying resource polymorphism.
   Similar news · Read more »
   
6. Hospital comparison web sites may offer inconsistent results
   09-17-2007 · EurekAlert!
   A review of six publicly available hospital comparison Web sites suggests that they display inconsistent results and use inappropriate or incomplete standards to measure quality, according to a report in the September issue of Archives of Surgery, one of the JAMA/Archives journals.
   Similar news · Read more »
   
7. University of Alberta researchers discover hummingbird secret
   11-29-2006 · EurekAlert!
   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.
   Similar news · Read more »
   
8. NASA satellite sees solar hurricane detach comet tail
   10-01-2007 · EurekAlert!
   A NASA satellite has captured the first images of a collision between a comet and a solar hurricane. It is the first time scientists have witnessed such an event on another cosmic body. One of NASA's pair of Solar Terrestrial Relations Observatory satellites, known as STEREO, recorded the event April 20.
   Similar news · Read more »
   
9. Light-emitting diodes for night-vision displays
   01-23-2007 · EurekAlert!
   American researchers led by Mark E. Thompson have developed OLEDs that emit infrared light. Such diodes are needed for displays meant to be viewed through night-vision devices. The research team from the University of Southern California, Princeton University and the University of Michigan, as well as the Universal Display Corporation divulged the secret behind their success in the journal Angewandte Chemie: a phosphorescent platinum porphyrin complex used as a doping agent.
   Similar news · Read more »
   
10. McNally's images bring history eye-level
    05-23-2007 · Massachusetts Institute of Technology (MIT)
    Mary Pat McNally's images of the intersection between historic landscape and modern culture will be on display in the Rotch Library from June 1 through 29.
    Similar news · Read more »