Michael Norris wrote:
"Over the last decade Fork-tailed Swifts have not appeared here
at all and White-throated Needletail numbers have been low.
So what's happened ? One guess is that our "pesticides" have
had a huge ecological effect (that would also explain how
difficult it is to see small bats around here). Another is that
- despite CAMBA etc. - circumstances between here and China (eg.
burning of forests = killing trees, understorey, insects...in
Indonesia) have decreased swift nos.
The ecological time-bomb is ticking and insect-eaters like these
swifts - the fastest birds in the world in level flight - are
victims ?"
Yes, sounds like it, but then so are we too, ultimately.
John Leonard
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
John Leonard (Dr),
PO Box 243,
Woden, ACT 2606,
Australia
http://www.spirit.net.au/~jleonard
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
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