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With many of us spending more time than ever at home due to the coronavirus, it also means our cars are parked more than usual, too. That makes them prime targets for bird bombings that could spell disaster for your car’s paint. But what we think of bird poop – the milky white substance – isn’t just poop. The white is uric acid, the avian equivalent of urine, and it’s that acid that can ruin the paint. Thankfully, automakers do their best to protect their paint with Ford going as far as to create artificial bird poop for its intensive paint tests.

Ford sprays the synthetic droppings on test panels that Ford then ages in extreme heat, between 40-60 degrees Celsius (104-140 Fahrenheit), to replicate the ownership experience. It pushes Ford’s paint corrosion protection to its limits. Ford’s fake poop is so realistic that the automaker can accurately reflect the diets of most of the birds in Europe. That means the automaker can recreate droppings with different acidities.

It’s just one of several intense paint tests Ford uses. The company also sprays phosphoric acid mixed with soap detergent, and synthetic pollen on panels before also aging them in extreme heat. The automaker also tests against other airborne particulates such as tree sap. The spring and summer months present unique challenges to paint protection, too. Intense sunlight can cause the paint to soften and expand, and when it cools, any grime, like bird droppings, can attach itself to the paint surface, potentially leaving a permanent impression.

The litany of tests allows Ford to best protect the paint of its vehicles from a wide variety of pollutants. Ford simulates direct non-stop ultraviolet light exposure on paint samples for up to 6,000 hours, or 250 days, though other automakers test weather extremes, too. The test simulates five years of the brightest place on Earth. To keep bird poop and other grime from damaging your paint, Ford recommends regularly washing your car with lukewarm water containing neutral pH shampoo.

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How Artificial Bird Poop Keeps Your Paintwork Safe in the Real World

While getting struck by bird poop may be a sign of good luck in many countries, bird poop landing on your car can have more serious implications – for your paintwork.

Fortunately, Ford vehicles are tested for just this eventuality – with the help of artificial bird poop.

The laboratory-developed synthetic droppings are so realistic that they can accurately reflect the differing diets – and subsequent different acidity of droppings – of most of the birdlife in Europe.

Applied to test panels as a spray, sample pieces are aged at 40° C, 50° C and 60° C in an oven to replicate customer use in extreme heats, pushing the paint corrosion protection to its limits.

The “bird poop test” is just one of the ordeals paint samples are put through. They also spray phosphoric acid mixed with soap detergent, and synthetic pollen on panels before aging them in ovens at 60° C and 80° C for 30 minutes. The test guards against airborne particulates such as pollen and sticky tree sap.

Spring cleaning

Spring and summer can be particularly dangerous for paint as not only are there often more birds about, but paint can also soften and expand under intense sunlight. When it cools it contracts and any grime, including bird droppings, attaches itself to the surface. If left on the vehicle, it can leave a permanent impression that requires specialist treatment to remove.

By fine-tuning the pigments, resins and additives that go into making a car’s shiny protective paintwork, specialists can ensure the coating Ford applies to its vehicles has the optimum make-up to resist the impact of these types of pollutants, no matter what the weather.

The science of bird poop

Bird poop is often white and black, but it’s not all poop. The white part is uric acid and is the bird equivalent to urine, formed in the urinary tract. Poop is made in the digestive system and while both can be secreted at the same time, it happens with such speed that the two don’t have time to mix.

Additional Ford paint tests

Other tests for paint samples include being bombarded non-stop with ultraviolet light for up to 6,000 hours (250 days) in a light lab – simulating five years in the brightest place on earth – to evaluate outdoor weathering; getting frozen in sub-zero temperatures; being exposed to harsh winter road grime in a high humidity salt chamber and subjection to simulated fuel staining from vehicle service station over-fuelling.

How to clean bird poop from your car

Leaving bird poop on any car is never a good idea. The advice for any car owner is simply to regularly wash your vehicle with a sponge and lukewarm water containing neutral pH shampoo, and gently remove harmless looking substances from the paintwork immediately. Waxing painted surfaces once or twice a year helps ensure new paint finishes can better resist harshest attacks, while staying shiny for longer.


With so many cars parked up at the moment as people stay at home, it’s likely birds are leaving their mark more than usual. It’s wise to remove it before it gets too baked on, but our customers can at least take some consolation in the work we do to keep their paint protected.”

André Thierig, manager, Core Engineering Paint, Ford of Europe

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