Marty,
a magpie is a fairly common bird in much of the west. Black and white from a distance. (although much of the tail is not black. my ID book pictures show it to be more of an irridescent blue-green)
and if you're old enough to remember........ the cartooon characters Heckle and Jeckle were supposed to be magpies.

to answer your question maccca,
I'm not sure we have any superstitions attached to magpies. In some areas they are considered pests. and their chatter can be annoying.
Are they more akin to our folk interpretations of owls? bad omens and such?

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Harriet
http://www.soundclick.com/bands/9/harrietamesmusic.htm