Donna,
I am so glad you posted that A/B picture of their "whispers!" I saw it but didn't know how to post! I have to admit, it is pretty darn cute!
I wonder what drives them... how they leave each other and then meet again. I always wondered where Kaver went after he would leave. I wonder where he is now.... ???
jeanne, I think me and you are on the same circuit...I'm so darn curious about all this migration stuff that I just want to get into one of their heads and find out.
Do they just say "well, gotta go"? IDK. pffft.