<HTML><HTML>In a message dated 11/21/2004 9:14:= 33 PM Eastern Standard Time, jkanter@rollingball.com writes: <BLOCKQUOTE TYPE=CITE style="BORDER-LEFT: #0000ff 2px solid; MARGIN-LEFT= : 5px; MARGIN-RIGHT: 0px; PADDING-LEFT: 5px">A related question - I'd be ver= y interested if they can find a way to explore this - is about intervals, specifically the octave - do birds have<B= R> any sense of an octave? I'd hope the researchers are exploring this question= as well. </BLOCKQUOTE> Greetings,            I know this. Ev= ery day this one bird sang: a repetative 2 note melody of a major second int= erval some days then a minor second on other days and a minor third on other= days and a perfect 4th still on other days!  it just selected an "inte= rval of the day" and sang it over and over.            Did the bird kn= ow what it was doing? I'd love to know.              I s= hould have taken notes. Maybe I would have found that every Thursday it was = the same interval or something. Julia Reading, PA</HTML>