My dumbass kept reading bird class. All building tenants must be able to accurately ID local bird life.
this post was submitted on 29 Oct 2026
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We need these for Humans. I work in a building with a large public work space. It is in the corner of the building with three glass walls. The single door is in the middle of the glass wall. We have had so many people walking right into the glass that we had to put logos on the glass to keep people from doing it. We have one lady with a huge collection of security camera footage of all the people doing it.
I'm glad the cameras were not installed when I did that a few days after I started hooking up all the networking gear.
How much windex do you guys go through?
Considering only two small sections of the Building are not all glass quite a lot.
But this occupies 0.001% of my visual field, just to save some wildlife?
More of this kind of regulation please.
Well, since there are alternatives that achieve the same, but invisible to the human eye, i still think its an annoying choice.
Any idea what they are? haven't seen those before, lol. But seriously, I'm curious
heres one product https://www.birdshades.com/
I assume the others use relatively similar tech. Since human and bird vision doesnt line up perfectly, there are wavelengths visible to birds outside of our vision.
Does it really work, or do birds still crash into the windows, misjudging the small dots for insects?
Birds probably have better eyesight than you or I
FYI, not all bird glass has visible fritting. They also come with UV reflective coatings that are almost transparent to the human eye (unless you're really close to the glass), e.g.,
Some UV treatments are stripes, others similar to an elongated version of the fritting from OP, and then there's the camo-stick-like version above. Stripes are the most noticeable to humans.
ETA: From personal experience, the glass is completely transparent from ~2+ meters away, and you have to be very close or staring directly at glare from the sun to see it when <2m away.
ETA2: Someone else shared the Wikipedia article on bird collisions below, but I wanted to take a second to highlight this graph from the article:
If you think bird safe glass is cool, spaying/neutering your cats and keeping them inside or on a leash is waaay cooler.
(This graph doesn't include indirect causes of death like climate change, deforestation, and pesticide use, but that doesn't make responsible pet ownership any less cool)
birds have a 4th color cone receptor. so thier eye sight is more advanced than ours.
Cats get the most common types of birds, though, while windows can get entire flocks of less common birds during migration. For susceptible migratory birds, windows are a much higher population level threat.
Also note how low wind turbines actually are on that list. The oil industry lives to harp on the number of birds killed by wind turbines, but you never hear them about the much larger number of birds killed by vehicles.
Still worth reducing every number on that list of course, but keep some perspective.
Many of these graphs were made to show that windmills do not really contribute to bird death.
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Someone should figure out how to paint cats so that birds can avoid them.
They have.
Birdsafe collars reduce bird catches by 87%. (A bell will reduce bird catches by 41%).
"Domestic cats kill an estimated 2.4 billion birds each year in the United States.."
I would not have guessed such an incredibly high number. 😳
Ha! That's really cool!
Right!? I wish more people knew about them. I'm not advocating for outdoor pets but if owners are going to insist they should at least make efforts to reduce the cat's hunting efficiency.
Is the cat issue specific to the Americas or something? Because here in Europe we've had cats for thousands of years and in Africa they existed long before that even, so I don't see how some pets getting out sometimes is any worse than the feral cats that existed long ago
Birds that get eaten tend to have high reproductive rates, and if predator levels drop their population gets so high they start to die from hunger or disease (which spreads faster in crowded conditions). Many predators eat an incredible number of animals - a large owl may eat several small birds every day for itself, and a multiple of that if feeding nestlings. Cats aren't unique here.
Domestic cats can be a threat to specific populations already endangered by other factors, but usually those are ground animals. Cats being a threat to population levels of birds in most of the world just isn't believable to me.
I have always suspected it's a minor bit of public misdirection to keep the stray cat population down in North America. Other parts of the world have much larger numbers of outdoor cats and their bird populations are no worse off.
Domestic cats that go out to hunt aren't controlled by natural causes, like food availability for example. But they go out at night to hunt nonetheless, and they're usually in their peak conditions because they don't have to go hungry for long periods of time.
As numbers that I am aware of,
Cats kill an estimated 50-200 million birds annually in Germany, according to NABU and Max Planck Institute estimates
With a cat population of Germany approximately 15 million, most of which are permanently indoor, the rest are keeping themselves very busy for no reason
AN OUTSIDE CAT IS A STRAY YOU FEED. THATS NOT YOUR FUCKING CAT. Thats all.
Wait until you figure out how many birds humans kill.
I mean, we do need to ban humans for sure
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i hit a goose with a car once and i still mourn that moment.
I was 20 minutes late to work once. Boss gave me a freebie when I told her that I was playing crossing guard for a family of ducks crossing the road.
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