Signs of spring are finally upon us. The last three mornings, around 6 o’clock, we’ve wakened to hear a male chickadee courtship song consisting of three notes: a descending whole step followed by a ...

Mountain chickadees in Boulder have evolved a different tune to avoid getting mixed up with their cousins, according to a new CU Boulder-led study published Oct. 9 in the Journal of Evolutionary ...

Mountain chickadees in Boulder have evolved a different tune to avoid getting mixed up with their cousins, according to a new study led by the University of Colorado Boulder published Oct. 9 in the ...

Researchers have found an alternative choice for songbird study: a small non-migratory songbird commonly found in North America known as the black-capped chickadee. Female black-capped chickadees sing ...

ALBANY (AP) - A chickadee's two-note song and a song sparrow's trill can be subtly modified by low levels of PCBs, according to a study published last month in the journal PLOS ONE. The study compared ...