Gee I'm glad I went out for Thanksgiving dinner. What a hilarious conversation this is.
I can't remember what I found out or what the reference was made to. Hold on, I'll phone my sister. Okay here goes. A whifflebird is a made up bird who flies in smaller circles until he flys up his own ---! The context of June's book was in reference to her husband, who was so into himself and his "me" mentality, that he was not listening to her one day, so she got mad and called him a whifflebird. In other words he was an a--'ole.