Somebody who talks like a bird and doesn't shut up! They tend to talk fast and loud!!! They also are hard to understand, due to the fact that the sound that comes from their voicebox is more or less like a Raven!!
"My sister went into a magpie mode when I confronted her on inpersonating me when she was stopped by a peace officer while being under the influence of narcotics and having warrants out for her arrest"