birding-aus herons neck swaying

[Harvey Perkins <>]

Jill et al,

My initial thought also was prey fixation by binocular or bi-auditory
mechanisms but you seemed sure that the head (and body) were kept
motionless; hence my "flexing" thought.  If you are definite about the head
being kept still I think there is still room for some alternative
explanation.  I wonder how much more difficult it is for a heron to
coordinate moving the neck only compared to neck and head?

Harvey



To unsubscribe from this list, please send a message to

Include ONLY "unsubscribe birding-aus" in the message body (without the
quotes)