"'New birding-aus'" <>
ALAN traps Silver Gulls?
"Philip Veerman" <>
Tue, 22 Jan 2019 08:50:08 +1100
Whilst the article has some concerning information and
suggestions, I reckon that one sentence about Silver Gulls at the end is
something of a nonsense. Or it is describing a very different issue from the subject
of the rest of the article. That they do this is true but surely they are not
confused. They clearly are using the night time lights as a means to gather up
extra food as many moths and likely other insects are attracted by the lights.
Magpies and Masked Lapwings will also be actively feeding at night under the floodlights
on the attracted or more visible insects. In these cases, the danger is to the population
[ On Behalf Of Martin
Sent: Tuesday, 22 January, 2019 8:29 AM
To: Peter Shute
Cc: New birding-aus
Subject: Re: [Birding-Aus] ALAN traps Silver Gulls?
The motion visible
in flocks of gulls in floodlights is very like the motion of daytime flocks
feeding off swarming insects. We saw a flock of 100 gulls on a floodlit
car park last night: presumably they had a good feed and then a snooze.
Other birds are
also attracted to insects in floodlights: at Canberra Stadium it is reasonably
common to see a Hobby feeding in the light. (In recent years it's also
common to see a bunch of turkeys on the paddock.)
On Tue, 22 Jan 2019 at 07:15, Peter Shute <> wrote:
Apologies, the magazine is Australian Birdlife, not
Wingspan. It appears it changed name about 7 years ago
From: Birding-Aus <>
On Behalf Of Peter Shute
Sent: 16 January 2019 8:12 AM
To: New birding-aus <>
Subject: [Birding-Aus] ALAN traps Silver Gulls?
the December 2018 issue of Wingspan, there's an article about the dangers of
ALAN (artificial light at night) to birds because it upsets their night
navigation abilities (Fatal Attraction, John Peter, p53). It offers Silver
Gulls as a local example:
Gulls provide the most conspicuous examples of ALAN-related discombulation in
Australia, with their white forms obvious as they swirl above floodlit city
landmarks or night matches at arenas."
always believed the story that they're feeding on flying insects, not confused
and lost. Is that story wrong?
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