
Outside in the dim light of another grey, damp dawn, the tui sings — or calls. What's the difference between singing and calling? As I wonder about this, the korimako calls — and that seems the appropriate word for the scolding, the slightly harsh "yak yak yak yak" which I assume (perhaps wrongly) is an alarm call. But I also hear a riroriro singing, and that, too, seems the unassailably correct word — melodious, easy on the ear, with a complex, definite structure in which each note seems to follow naturally from its predecessor.
This, of course, is a human interpretation, but what does a bird hear when it hears another of its own species singing (or calling)? What if the singer and the listener belong to different species; what does the riroriro hear when it hears the tui's astonishingly complex vocalisation (there, I've found another term, one that subsumes singing and calling — a dry, scientific, apparently objective term, but a useful one)? The best we can do to answer these questions is to use a combination of science and
I look up. The clouds in the west have turned pastel orange with a faint hint of mauve in the grey; blackbirds hop about the paddock and sparrows cheep (that, at least, is accurate — it's neither song nor call, and "vocalisation" tells us nothing about the quality of a sparrow's cheep). As I gaze outside, a kahu sails past, a long, low, even glide right across the window-framed view.
What is it like to be a kahu, a hawk on the morning wind?
Photos:
1.Tauhou; silvereye or waxeye (Zosterops lateralis).
2. Kereru (New Zealand pigeon; Hemiphaga novaeseelandiae).
Photos and original text © 2009 Pete McGregor