A good point Rob - perhaps there will be evidence in the calls and sonograms at
http://www.xeno-canto.org/ ?
Regards - David
On 14/03/2016 12:20 PM, Rob Geraghty wrote:
I was curious if anyone knows whether there's a difference in pitch of Spotted Pardalote calls between the genders. I was listening to the birds calling outside and there's at least a semitone difference between the two birds calling. I've noticed the pitch
difference before, but it just occurred to me that the difference might be the male calling to the female (or vice versa) and getting a reply.
|
|
