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Latest American Redstart Stories

350359cdf753279674046b0fd4c9b5571
2011-03-31 08:31:15

Instinct and the annual increase of daylight hours have long been thought to be the triggers for birds to begin their spring migration. Scientists at the Smithsonian Conservation Biology Institute, however, have found that that may not be the case. Researchers have focused on how warming trends in temperate breeding areas disrupt the sensitive ecology of migratory birds. This new research shows that changes in rainfall on the tropical wintering grounds could be equally disruptive. The team's...

2010-04-21 13:50:27

The results of genetic studies on migratory birds substantiate the theory that in the case of a continued global warming, and within only a few generations, migratory birds will - subject to strong selection and microevolution - at first begin to fly shorter distances and at a later stage, stop migrating, and will thus become so-called "residents". In a selection experiment with blackcaps from southwest Germany, Francisco Pulido and Peter Berthold at the Max Planck Institute for Ornithology...

2004-11-28 03:00:22

The astonishing diversity of avian movement patterns, reproductive tactics, and survival rates creates rich opportunities for study, but also presents enormous challenges for explaining variation among life-history traits and dispersal. Dispersal decisions shape the genetic structure of populations and thus can be of considerable importance in processes such as speciation. Moreover, a better understanding of dispersal and movement among populations remains fundamental for effective...


Latest American Redstart Reference Libraries

34_075e2ebaab5abd24581ffa710fd303db
2005-06-14 12:25:39

The American Redstart, Setophaga ruticilla, is a New World warbler. It breeds in North America across southern Canada and the eastern USA. Being a migratory bird, it winters in Central America, the West Indies and northern South America. It has been spotted in Western Europe on very rare occasions. This species is unrelated to the Old World redstarts, but gets its name from the male's red tail, start being an old word for tail. The breeding male is unmistakable. It has jet black...

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Word of the Day
caparison
  • A cloth or covering, more or less ornamented, laid over the saddle or furniture of a horse, especially of a sumpter-horse or horse of state.
  • Clothing, especially sumptuous clothing; equipment; outfit.
  • To cover with a caparison, as a horse.
  • To dress sumptuously; adorn with rich dress.
This word ultimately comes from the Medieval Latin 'cappa,' cloak.
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