Why do some animals have extravagant, showy ornaments—think elk and deer antlers, peacock feathers and horns on dung beetles—that can be a liability to survival? Charles Darwin couldn't figure it out, but now a Northwestern ...
Evolution
Nov 30, 2016
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Call it a shimmy meant to hypnotize. When courting a female, peacocks fan their colorful rear feathers and shake them, but somehow keep their plumes' iridescent circles, or eyespots, nearly still, like a fixed stare.
Plants & Animals
Apr 27, 2016
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(Phys.org) —Although peacocks are famous for tall tail feathers with colorful eyespots, an expert says peahens look lower when sizing up a male and that dance moves may give a suitor an edge.
Plants & Animals
Feb 7, 2014
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0
A University of Alberta researcher's examination of fossilized dinosaur tail bones has led to a breakthrough finding: some feathered dinosaurs used tail plumage to attract mates, much like modern-day peacocks and turkeys.
Archaeology
Jan 4, 2013
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2
Iridescence, or sheen that shifts color depending on your viewing angle, is pretty in peacock feathers. But it's been a nuisance for engineers trying to mimic the birds' unique color mechanism to make high-resolution, reflective, ...
Optics & Photonics
Feb 5, 2013
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(PhysOrg.com) -- A new study presented at the Society for Vertebrate Paleontology shows that the Oviraptor dinosaur had a tail structure that allowed it to shake its tail feathers, possibly to attract potential mates.
The brightest hues in nature are produced by tiny patterns in, say, feathers or scales rather than pigments. These so-called "structural colors" are widespread, giving opals their fire, people their blue eyes, and peacocks ...
Archaeology
Nov 15, 2011
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Colors are produced in a variety of ways. The best known colors are pigments. However, the very bright colors of the blue tarantula or peacock feathers do not result from pigments, but from nanostructures that cause the reflected ...
Nanomaterials
Nov 17, 2016
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12
(Phys.org)—A University of Alberta researcher's examination of fossilized dinosaur tail bones has led to a breakthrough finding: some feathered dinosaurs used tail plumage to attract mates, much like modern-day peacocks ...
Archaeology
Jan 16, 2013
2
0
In the animal kingdom, huge weapons such as elk antlers or ornaments like peacock feathers are sexy. Their extreme size attracts potential mates and warns away lesser rivals.
Plants & Animals
Jul 26, 2012
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