Thanks Alicia Plotkin for pointing this out: in spite of the fact that the female Barred Owl is larger than the male, the call of the male IS pitched lower than the female. So, from what I recall, it was the male that came in first to our playback followed a short time later by the female. It makes sense that the male would have the primary role in driving away intruders.
Bob McGuire -- Cayugabirds-L List Info: http://www.NortheastBirding.com/CayugabirdsWELCOME http://www.NortheastBirding.com/CayugabirdsRULES http://www.NortheastBirding.com/CayugabirdsSubscribeConfigurationLeave.htm ARCHIVES: 1) http://www.mail-archive.com/cayugabirds-l@cornell.edu/maillist.html 2) http://www.surfbirds.com/birdingmail/Group/Cayugabirds 3) http://birdingonthe.net/mailinglists/CAYU.html Please submit your observations to eBird: http://ebird.org/content/ebird/ --
