Channel-bills are (apparently) a bit different from other cuckoos in the sense that they are most likely to be observed calling while in flight. In the last couple of weeks I have noticed groups of CBCs raising a racket. This morning I saw a group of five flying and calling together. I originally thought the calling flights might be territorial or associated with nest raiding, but I am now wondering if the calling flights play a role in “picking up” immature birds from their hosts and inducting them in CBC “culture”.
Has anyone studied this aspect of CBC behaviour?
Regards, Laurie. ===============================
To unsubscribe from this mailing list, send the message: unsubscribe (in the body of the message, with no Subject line) to: birding-aus-request@vicnet.net.au
http://birding-aus.org ===============================
