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Latest Zonotrichia Stories

White-throated Sparrow Study Traces Social Behaviors To Specific Gene
2014-01-15 09:31:53

Emory University A unique study of the white-throated sparrow has identified a biological pathway connecting variation in the birds’ aggression and parenting behaviors in the wild to variation in their genome. The Proceedings of the National Academy of Sciences (PNAS) is publishing the results of the experiments, conducted by the lab of neuroscientist Donna Maney in Emory University’s Department of Psychology. The research, which comprised behavioral observations of the study...

Younger Birds Get No Respect
2012-02-09 04:01:34

When mature male white-crowned sparrows duel to win a mate or a nesting territory, a young bird just doesn't get much respect. Researchers found that older male white-crowned sparrows don't put much of a fight when they hear a young male singing in their territory — probably because the older bird doesn't consider the young rival much of a threat. But a male sparrow will act much more aggressively if it hears a bird of the same age singing in a territory it claims as its own....

11730f6f68b7a5e368cc9056619442be
2011-08-11 08:31:17

While singing the same songs as your neighbors may sound harmonious, research conducted at Queen's University Biological Station (QUBS) suggests that song-sharing amongst song sparrow populations is actually an aggressive behavior, akin to flinging insults back and forth. "It's been hypothesized that repertoire size and song complexity is about the singer's ability to advertise their quality as a mate," says lead author Janet Lapierre, a visiting biologist from the University of Western...

2010-07-29 09:05:02

During the Spring and Fall migratory seasons, sparrows become significantly less capable of resisting temptation. Researchers writing in the open access journal BMC Neuroscience investigated impulse control and sleep in White-crowned Sparrows during migratory and non-migratory seasons. During migratory periods, the birds slept very little and became more impulsive, but sleep loss itself was not entirely to blame for their impulsivity. University of Wisconsin-Madison researchers studied the...

2009-05-21 15:34:07

A U.S. biologist says she has discovered bird songs can change as a bird's habitat changes. Elizabeth Derryberry said she made her discovery while conducting her dissertation research at Duke University. She said as vegetation reclaimed formerly cleared land in California, Oregon and Washington during the last 35 years, male white-crowned sparrows have lowered their pitch and slowed their singing so that their love songs would carry better through heavier foliage. This is the first time that...

6c806e9616652fa4ef50f272f6c65bca1
2009-05-20 13:45:47

Just as a changing radio landscape has made it tough for Foghat to get much airplay these days, so it is for birdsongs according to new research published in The American Naturalist. Behavioral ecologist Elizabeth Derryberry (Louisiana State University) has found that the songs of white-crowned sparrows change over time in response to changing habitats. The research sheds light on the factors that drive the evolution of mating signals in birds. Derryberry says she first noticed that sparrows...


Latest Zonotrichia Reference Libraries

38_84d4e74c3de15d8e4715194e2ab3b684
2006-11-19 21:39:06

The Harris's Sparrow, Zonotrichia querula, is a large sparrow found in the northern part of central Canada. They migrate to the Great Plains states of the U.S., from South Dakota to Upper Texas in winter. The common name of this species commemorates the American amateur ornithologist Edward Harris (1799"“1863).

38_dc47b573f8452b78bcb2df55a2d79eb2
2006-11-19 21:38:22

The Golden-crowned Sparrow, Zonotrichia atricapilla, is a medium-sized sparrow. The breeding habitat is across the northern part of western Canada and the U.S. state of Alaska. In the winter the Golden-crowned Sparrow migrates to Vancouver Island in Canada and the West Coast of the United States. At just over 7 inches in length, it is slightly larger than the closely related White-crowned Sparrow. When breeding, it has a distinct gold patch on its head, flanked by two dark black stripes....

38_cd79d4a6064c7c5bf80490d56d94ed75
2006-02-21 15:23:19

The White-throated Sparrow (Zonotrichia albicollis) is a passerine bird of the American sparrow family Emberizidae. This North American species breeds in central Canada and New England and nests either on the ground under shrubs or low in trees in deciduous or mixed forest areas. In winter, it migrates to the southern USA. This bird is a rare visitor to Western Europe. This species is easily identifiable by its rufous wings and white throat. Some birds have a tan supercilium and browner...

38_5f482170305f72b6b105e3982ca510c3
2006-02-21 14:59:06

The White-crowned Sparrow (Zonotrichia leucophrys) is a medium-sized sparrow found in brushy areas across northern Canada and the western United States. They prefer to nest either on the ground, low in bushes or under shrubs. Adult birds have black and white stripes on their heads, grey faces, brown streaked upper parts and long tails. The wings are brown with bars and the underparts are grey. Their bill is pink or yellow. They are similar in appearance to the White-throated Sparrow but do...

38_3d3462faa1905d1b86ae331caa2ac980
2006-02-21 03:44:21

American sparrows are a group of mainly New World passerine birds and form part of the family Emberizidae. American sparrows are more closely related to Old World buntings (family Emberizidae) than they are to the Old World sparrows (family Passeridae), despite the fact that they share the name sparrow. American sparrows are similar to finches in both appearance and habit, with which they sometimes used to be grouped. Some emberizid species still carry the finch name. American...

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Word of the Day
virgule
  • A punctuation mark (/) used to separate related items of information.
  • A little rod; a twig.
This word comes from the Late Latin 'virgula,' accentual mark, a diminutive of 'virga,' rod.
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