junco

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junco

or

snowbird,

small seed-eating bird of North America closely related to the sparrowssparrow,
common name of various small brown-and-gray perching birds. New World birds called sparrows are members of the finch family. They were named for their resemblance to the English sparrow and the European tree sparrow (members of the weaverbird family), both introduced in
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. Juncos have white underparts and gray (sometimes also brown) backs. They travel in flocks. The dark-eyed junco is the most common species, comprising in E North America the subgroup sometimes called the slate-colored junco, and several Western varieties. Juncos belong to the genus Junco and are classified in the phylum ChordataChordata
, phylum of animals having a notochord, or dorsal stiffening rod, as the chief internal skeletal support at some stage of their development. Most chordates are vertebrates (animals with backbones), but the phylum also includes some small marine invertebrate animals.
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, subphylum Vertebrata, class Aves, order Passeriformes, family Emberizidae.
References in periodicals archive ?
He has been back in the Juncos fold for well over a decade and is ably assisted in the twin-lead role by Kenny Barker on electric guitars.
As an initial test of whether junco song has the potential to reliably signal population of origin, I investigated whether territorial male Dark-eyed Juncos in eastern North America (Virginia) would respond differently to playbacks of song recorded in their local population (Junco hyemalis carolinensis) and playbacks of song recorded in a geographically distant population of a different Dark-eyed Junco subspecies (Junco hyemalis thurberi) in western North America (California).
Menezes will race in 2011 for Juncos Racing, an elite racing team that finished 2010 with a driver's championship and a second place in the team standings.
Northern cardinals, dark-eyed juncos, and song sparrows were collected on the study areas during November, December, January, and February of 1980-81, 1981-82, and 1982-83; white-throated sparrows were collected in 1982-83 only.
The company also received an FDA warning letter following a December 2008 inspection of the company's facility in Juncos, which is a manufacturing location for the Neuromodulation, Diabetes and Cardiac Rhythm Disease Management businesses.
Finally, there is an astonishing 50-year milestone to celebrate this year for local favourites The Junco Partners.
The study of juncos as a whole suggests that at least two traits are subject to selection in males: wing length and the proportion of white on the otherwise gray tail feathers ("tail white"; Fig.
In dark-eyed juncos (Junco hyemalis), individuals that were sired by a male other than their mother's pair-bonded partner grew up to have higher reproductive success than did individuals whose mother stayed faithful to her partner.
Scientists from the University of Virginia, Charlottesville, report that extreme testosterone production--high or low --puts male dark-eyed juncos at a disadvantage in both survival and reproduction outside their semi-monogamous breeding pairs.
In addition to the California program, the Amgen Award for Science Teaching Excellence is granted in Boulder County, Colorado; Jefferson County, Kentucky; and Juncos, Puerto Rico, locations where Amgen has facilities.
Birds of particular note: a regularly nesting pair of red-shouldered hawks, dark-eyed juncos, pine warblers and bald eagles along the river in winter.