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Jay

Diposting oleh Encarta Blog




Jay


by. Nolvyhindarto,S.Si_Encartablog_Animals


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class="Heading_00202__Char" style=" text-decoration: none;">Contents


[ class="Hyperlink__Char">hide]



  • 1 class="toctext__Char" style=" color: #0000FF">Systematics and species


    • 1.1 class="toctext__Char" style=" color: #0000FF">Old World ("brown") jays

    • 1.2 class="toctext__Char" style=" color: #0000FF">Grey jays

    • 1.3 class="toctext__Char" style=" color: #0000FF">American ("blue") jays


  • 2 class="toctext__Char" style=" color: #0000FF">In culture


    • 2.1 class="toctext__Char" style=" color: #0000FF">Slang


  • 3 class="toctext__Char" style=" color: #0000FF">See also

  • 4 class="toctext__Char" style=" color: #0000FF">References

  • 5 class="toctext__Char" style=" color: #0000FF">External links




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 The jays are several class="Hyperlink__Char">species
of medium-sized, usually colorful and noisy, class="Hyperlink__Char">passerine class="Hyperlink__Char">birds
in the crow class="Hyperlink__Char">family class="Hyperlink__Char">Corvidae.
The names jay and magpie are somewhat
interchangeable, and the evolutionary relationships are rather complex.
For example, the Eurasian Magpie seems more closely related
to the Eurasian Jay than to the Oriental class="Hyperlink__Char">Blue
and Green Magpies, whereas the class="Hyperlink__Char">Blue Jay
is not closely related to either.


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 Systematics and species


class="Normal_0020_0028Web_0029__Char" style=" text-decoration: none">See classification box for relevant class="Hyperlink__Char">genera
links. Traditionally, the class="Hyperlink__Char">Crested
Jay (Platylophus galericulatus) is placed here, but apparently this
is not correct, as suggested by anatomical and molecular evidence[ class="Hyperlink__Char">citation needed]. Its placement
remains unresolved; it does not seem to be a corvid at all. It should
be noted that according to the research of Ericson et al. (2005), jays are not a monophyletic group. Rather, they can be
divided into an American and an class="Hyperlink__Char">Old World
lineage (the latter including the class="Hyperlink__Char">ground
jays and the class="Hyperlink__Char">Piapiac),
while the gray jays of the genus Perisoreus form a group of their own. The class="Hyperlink__Char">Black
Magpie, formerly believed to be related to jays, is
classified as a treepie.


Old World
("brown") jays



Grey jays



American
("blue") jays



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 In culture


Slang


The word "jay" has an archaic meaning in American slang meaning
an impertinent person.


class="Normal_0020_0028Web_0029__Char" style=" text-decoration: none">The term jaywalking was coined
in 1915 to label persons crossing a busy street carelessly and becoming
a traffic hazard.[1] The term began to imply recklessness or impertinent
behavior as the convention became established. (" class="Hyperlink__Char">jay-walker". class="HTML_0020Cite__Char">Oxford English
Dictionary. Oxford University Press. 2nd ed. 1989.).


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 See also



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 References



  • Ericson, Per G. P.; Jansén,
    Anna-Lee; Johansson, Ulf S. & Ekman, Jan (2005): Inter-generic relationships
    of the crows, jays, magpies and allied groups (Aves: Corvidae) based
    on nucleotide sequen    ce data. Journal of Avian Biology 36: 222-234. class="Hyperlink__Char">PDF fulltext


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 External links



Retrieved from "http://en.wikipedia.org/wiki/Jay"













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