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Latest Dark-eyed Junco Stories

Promiscuousness Results In Genetic Trade-up, More Offspring
2011-09-01 10:23:31

It's all about the grandkids! That's what a team led by an Indiana University biologist has learned about promiscuous female birds and why they mate outside their social pair.

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2011-07-20 12:23:50

In a case of life imitating art, avian scents given off by male songbirds have the females (and males) flocking in.

2010-05-14 08:39:53

Individual male birds can differ dramatically in their behavior, and this difference is often due in part to how much testosterone they produce.

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2010-05-04 09:36:57

A field study of the relationship between testosterone and natural selection in an American songbird, the dark-eyed junco, has defied some expectations and confirmed others.

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2010-03-23 10:37:26

Two recently diverged populations of a southern California songbird produce unique odors, suggesting smell could contribute to the reproductive isolation that accompanies the origin of new bird species.

2009-12-04 15:04:24

Birds' alarm calls serve both to alert other birds to danger and to warn off predators.

2006-05-31 00:05:00

Testosterone may help some songbirds "live fast, die young and leave a good-looking corpse," as the adage goes.


Latest Dark-eyed Junco Reference Libraries

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2006-02-21 05:27:14

The Dark-eyed Junco (Junco hyemalis) is the best-known species of junco, a genus of small American sparrows. Adult juncos are generally grey on top and have a white belly and white outer tail feathers. The bill is usually pinkish. Other than those similar characteristics, there are several regional variations: The Slate-colored Junco (J. hyemalis hyemalis) has a dark slate-grey head, breast and upper parts. Females are brownish grey. It is found in North America in taiga forests from...

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Word of the Day
aphotic
  • Having no light.
  • Of or relating to the region of a body of water that is not reached by sunlight and in which photosynthesis is unable to occur.
The word 'aphotic' comes from Greek roots meaning 'without' and 'light'.
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