Ashwin....This subject was discussed last year on birding-aus. Someone (I
can't remember who) reproduced a discussion of this very question by
Professor Jack Pettigrew from University of Queensland who has studied the
physiology of bird vision. If I recall, the bottom line was that birds are
able to withstand the effects of bright light much better than we are, but I
suggest you check the archives and read his enlightened comments for
yourself.
Steve Murray
-----Original Message-----
From:
On Behalf Of Ashwin Rudder
Sent: Saturday, 10 May 2008 11:38 AM
To:
Subject: spotlighting and bird's eyes
g'day
i was spotlighting some White-throated Nightjars last October, when i began
to wonder what the bright beams of spotlights actually do to nightbirds, and
just bird in genral, eyes.
when humans look into a bright light for too long, they suffer permanent or
temporary eyesight damage. I was wondering if this is the same for night
birds?
also, is there a difference in damage between different bulbs, eg LED,
Xenon, Krypton, etc?
Which is easier for spotlighting and identification, as well?
Thanks in advance,
Ashwin
===============================
www.birding-aus.org
birding-aus.blogspot.com
To unsubscribe from this mailing list,
send the message:
unsubscribe
(in the body of the message, with no Subject line)
to:
===============================
===============================
www.birding-aus.org
birding-aus.blogspot.com
To unsubscribe from this mailing list,
send the message:
unsubscribe
(in the body of the message, with no Subject line)
to:
===============================
|
