Today about birds and how to protect them against collision with power lines. Each year millions of birds die, especially when migrating in spring and autumn. The patented FireFly device was invented and manufactured by Hammarprodukter AB to protect them.
The following videos were shot at Kübassaare / Saaremaa Island, Estonia in 2017, as a proof that a carefully designed bird diverting device, such as the patented FireFly (and BirdMark) made by Hammarprodukter AB of Sweden, works efficiently to divert birds and make them change their flight path, hence protecting their lifes.
[click images to see larger ones]
Power line at Kübassaare / Saaremaa island / Estonia:
The following video was shot in June and August 2017 in normal human vision, in simulated bird vision at daylight, but also at dusk / night to show the afterglow effect this FireFly device has, aside from its intense flickering when rotating, which can be seen up to 350-400 meters, which is the visible distance covered in this video. Several overflights were recorded, where birds actively changed their normal flight path.
[best to watch in HD full screen]
Here now a screen shot showing how efficient FireFly was able to divert the flight path of the birds.
Simulated bird vision still image from video with diverted flight path:
Birds (many of them) have the ability to see UV (ultraviolet) light, which we humans cannot see! This grahic here makes this visible by comparing our human spectral range to the larges one birds have, based on them being tetrachromats (they see 4 colors), whereas we humans are trichromats (we see 3 colors).
Be reminded: The pink-magenta UV "color" seen here has been chosen to make it better visible for us humans, it is a "false color", as per definition UV light has no color!
So how may then birds look like, seen through birds eyes? Possible like this (it is simulated bird vision on the right):
The Hammarprodukter FireFly also makes use of this knowledge, to scare birds away from high voltage powerlines, which may harm birds!
HERE is more about bird vision!
HERE a link to the manufacturer product site Hammarprodukter.se
And HERE more about human vision vs bird vision and how to make that visible.
[all graphics shown here are (C) Hammarprodukter AB and Dr Klaus Schmitt, used with permission]
More about that here later, as I took on the task to scientifically assist Hammarprodukter AB.
Stay tuned, more will follow on this fascinating subject...