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Topic: Spizella


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In the News (Fri 4 Dec 09)

  
  Brewer's Sparrow - Wikipedia, the free encyclopedia
The Brewer's Sparrow, Spizella breweri, is a small, slim sparrow.
Spizella breweri breweri is found in brushy areas, especially with sagebrush, in southern parts of western Canada and in the western United States.
Spizella breweri taverneri is found in thicketed areas around the tree-line in the Rockies of northern British Columbia, the southern Yukon and aoutheastern Alaska.
en.wikipedia.org /wiki/Brewer's_Sparrow   (289 words)

  
 ITIS Standard Report Page: Spizella   (Site not responding. Last check: 2007-10-09)
Spizella atrogularis (Cabanis, 1851) -- Black-chinned Sparrow, Gorrión barba negra
Spizella pallida (Swainson, 1832) -- bruant des plaines, Clay-colored Sparrow, Gorrión pálido
Spizella wortheni Ridgway, 1884 -- Gorrión de Worthen, Worthen's Sparrow
www.itis.usda.gov /servlet/SingleRpt/SingleRpt?search_topic=TSN&search_value=179431   (188 words)

  
 Fred E. Wilson
Wilson, F.E. A test of the hypothesis that T3 is the "seasonality" thyroid hormone in American tree sparrows (Spizella arborea): intracerebroventricular infusion of iopanoic acid, an inhibitor of T3 synthesis and degradation.
Thyroid hormone acts centrally to programme photostimulated male American tree sparrows (Spizella arborea) for vernal and autumnal components of seasonality.
Effect of withdrawing long days from male American tree sparrows (Spizella arborea): implications for understanding thyroid-dependent programming of seasonal reproduction and postnuptial molt.
www.ksu.edu /biology/bio/faculty/wilson/wilson.html   (193 words)

  
 Omaha Sunday World-Herald | Spizella Monticola.   (Site not responding. Last check: 2007-10-09)
It is very probable that few of the musical critics have even heard the name of the delightful artist, yet he is spending the winter in our midst and is singing almost daily.
Spizella Monticola - for that is his monicker - is peculiar in some ways, but most artists are peculiar; so that is not remarkable.
In the first place he is rather brown in color, except the stomach, which is grey - and he has a fl spot as big as the end of a led pencil squarely in the middle of his breast.
libr.unl.edu:2000 /birds_of_nebraska/DJ.00792.html   (443 words)

  
 OVARIAN GROWTH IN TREE SPARROWS (SPIZELLA ARBOREA)
Moreover, although a circadian oscillation in photosensitivity apparently is involved in the control of ovarian growth in Japanese Quail (Follett and Sharp, 1969), there is no evidence for or against involvement of a similar oscillation in the control of photoperiodic ovarian growth in species that breed seasonally.
In this report, we describe the temporal course and rate of ovarian growth in Tree Sparrows (Spizella arborea) exposed to daylengths of 8, 11, 15, or 20 hours and examine rate of photoinduced ovarian growth as a function of daylength.
In addition, we report results of a preliminary experiment that suggest a circadian oscillation operates in the photoperiodic ovarian response of the Tree Sparrow.
elibrary.unm.edu /sora/Auk/v089n01/p0146-p0155.html   (4511 words)

  
 Clay-colored Sparrow (Spizella pallida)
Clay-colored Sparrows are small Spizella sparrows about the same size as Chipping and Field sparrows.
Chipping Sparrows (Spizella passerina) can be seperated by their dark lores and gray rump.
Clay-colored Sparrows are buffy overall, with a brown rump and pale lores.
www.geocities.com /birdingteen/spp-pages/ccsp   (530 words)

  
 Family Emberizidae
This sparrow resembles other Spizella sparrows, but is only found here in the winter while the other species are summer visitors.
This species can be distinguished from other Michigan Spizella sparrows by the lack of a reddish cap and its overall more buff color.
This species is distinguished from other Spizella sparrows by their combination of white eye streak and bright reddish cap.
www.msu.edu /~peter379/emberizidae.html   (1625 words)

  
 Spizella -- Facts, Info, and Encyclopedia article   (Site not responding. Last check: 2007-10-09)
The genus Spizella ((French general who became emperor of the French (1769-1821)) Bonaparte, 1832) is a group of (additional info and facts about American sparrow) American sparrows in the family Emberizidae.
Outside of the nesting season, they often forage in small mixed flocks.
(Common North American finch of brushy pasturelands) Field Sparrow, Spizella pusilla
www.absoluteastronomy.com /encyclopedia/S/Sp/Spizella.htm   (166 words)

  
 B-Mail(sm): ID-FRONTIERS for April 6-12, 2003
^^ ] Subject: Re: Spizella sparrow near Elma(photos) (fwd) From: Derek Hill Date: 11 Apr 2003 10:00am In response to the odd Spizella near Elma, I too had an odd Clay-colored-like Spizella that I assume is hybrid.
Plumage-wise it didn't strike me as being a normal Clay-colored, and the song is what threw me off the most.
I asked for help on the ID and asked a couple sparrow experts who said it could be some odd Spizella hybrid combination but it's impossible to know for sure.
www.virtualbirder.com /bmail/idfrontiers/200304/w2   (1610 words)

  
 phorum - IDFrontiers - [BIRDWG01] Spizella sparrow near Elma(photos) (fwd)
My mother and I have placed 4 photos of the unidentified Spizella sparrow that we observed yesterday near Elma,hoping we may get some feedback on the possible identity of the bird between either an abbarent Clay-colored Sparrow or a hybrid between a Chipping and Clay-colored Sparrow.
In response to the odd Spizella near Elma, I too had an odd
could be some odd Spizella hybrid combination but it's impossible to know
www.surfbirds.com /phorum/read.php?f=51&i=1060&t=1060   (303 words)

  
 Coots
American Tree Sparrow, Spizella arborea <#619> -- J. Farrand, Jr.
Chipping Sparrow, Spizella passerina <#258> -- J. Audubon
Clay-colored Sparrow, Spizella pallida <#803> -- J. Audubon
faculty.ucr.edu /~legneref/birds/sparrows.htm   (227 words)

  
 Worthen's Sparrow (Spizella wortheni) - BirdLife species factsheet
Range & population Spizella wortheni has suffered a major range contraction and now breeds at Tanque de Emergencia in Coahuila (100-120 individuals found in January 1998
Recommended citation BirdLife International (2005) Species factsheet: Spizella wortheni.
This information is based upon, and updates, the information published in BirdLife International (2000) Threatened birds of the world.
www.birdlife.org /datazone/species?action=SpcHTMDetails.asp&sid=9006&m=0   (676 words)

  
 Chipping Sparrow
Occasionally, Chipping Sparrows are heard singing at night.
Description: Sparrows of the genus Spizella are small and slim with unstreaked underparts and long notched tails.
The Chipping Sparrow is distinguished in adult plumage by its distinctive head pattern: rusty cap, white forehead bordered by fl; white superciliary stripe; fl ocular stripe, and gray rump.
birds.cornell.edu /BOW/CHISPA   (603 words)

  
 Definition of spizella - Merriam-Webster Online Dictionary
spizella is one of more than 1,000,000 entries available at Merriam-WebsterUnabridged.com.
For More Information on "spizella" go to Britannica.com
Now you can take the Eleventh Edition with you anywhere as Franklin's new Speaking Electronic Handheld!
www.m-w.com /cgi-bin/dictionary?book=Dictionary&va=Spizella   (82 words)

  
 B-Mail(sm): CTBIRD for January 5-11, 2003   (Site not responding. Last check: 2007-10-09)
CT probable BLACK GUILLIMOT, NORTHERN SHRIKE, SPIZELLA SPARROW
Reports of Common Murre especially need to be detailed.
From Nita and Clark Hamiltion: 1/5 - Stratford, Lordship eastern end -- probable BLACK-GUILLIMOT From James Restivo: 1/6 - Stamford, Kosciusko Park (on maps as Dyke Park) -- ORANGE-CROWNED WARBLER, spizella type sparrow.
www.virtualbirder.com /bmail/ctbird/200301/w2   (1531 words)

  
 phorum - IDFrontiers - [sbcobirding] FW: [BIRDWG01] Spizella head patterns
phorum - IDFrontiers - [sbcobirding] FW: [BIRDWG01] Spizella head patterns
Just a forward on spizella head-patterns, given the recent discussion of the
It does appear that CCSP can lack central crown
www.surfbirds.com /phorum/read.php?f=51&t=1568&a=2   (210 words)

  
 chipping sparrow, Spizella melodia (Passeriformes: Emberizidae) @ Forestry Images
chipping sparrow, Spizella melodia (Passeriformes: Emberizidae) @ Forestry Images
Aves > Passeriformes > Emberizidae > Spizella melodia
Forestry Images is a joint project of The Bugwood Network and USDA Forest Service.
www.forestryimages.org /browse/subimages.cfm?sub=3948   (76 words)

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