How Common Is a Bird Strike? Real-World Risk by Setting

Bird strikes are extremely common, but the risk they pose depends heavily on what kind of strike you're talking about. In aviation, roughly 17,000 to 19,000 strikes are reported to the FAA each year in the U.S. alone. At your home windows, the numbers are staggering: estimates range from 365 million to nearly one billion birds killed annually in building collisions across the country. On roads, vehicle collisions kill somewhere between 89 million and 340 million birds per year. So yes, bird strikes happen all the time. The question is where they're happening and what the actual risk is to you, your property, or passengers on a plane.

What counts as a bird strike (and what doesn't)

A bird strike is a direct collision between a bird and something it didn't mean to hit: an aircraft, a building, a vehicle, or a window. If you want to understand what a bird strike actually is in technical terms, the FAA defines it as a confirmed collision, not just a close call. A bird flying near a plane doesn't count. Neither does a bird that narrowly misses a car. ICAO specifically distinguishes between a "strike" (confirmed collision) and a "near miss" (potential strike where no collision occurred). This distinction matters because strike databases count only confirmed collisions, which means the real number of risk exposures is even higher than published figures suggest.

For aviation reporting, the FAA considers a strike to have occurred when it's witnessed, when bird remains are found, or when physical evidence on the aircraft (damage, impact marks, feathers) confirms a collision. Near-misses don't count. That means all those big statistics you'll see about bird strikes are, if anything, undercounts.

How common bird strikes are overall

The FAA's National Wildlife Strike Database contains 319,047 reported wildlife strikes over 35 years (1990 to 2024), and 97% of wildlife strikes in major datasets involve birds. That works out to roughly 9,000 to 19,000 reported aviation bird strikes per year in the U.S., with numbers trending upward over time partly because reporting has improved. In 2023 alone, 19,628 strikes with damage were recorded.

But aviation is actually one of the smaller parts of this picture. How often bird strikes occur across all environments tells a much bigger story. Window and building collisions kill hundreds of millions of birds every year. Vehicle collisions kill tens to hundreds of millions more. Bird strikes as a category are one of the leading causes of direct bird mortality in the United States.

Where bird strikes happen most

Airports and aircraft

More than 90% of reported bird strikes in aviation occur at or below 3,000 feet above ground level. That means the vast majority happen during takeoff, climb, approach, and landing, not during cruise at altitude. The FAA confirms that landing phases account for about 61% of bird strikes with civil fixed-wing aircraft, and takeoff and climb account for about 36%. Strikes at higher altitudes do happen, but they're almost always linked to bird migration.

Airports near wetlands, open fields, or bodies of water face the highest risk because those habitats attract large flocks of birds. Airports implement layered mitigation strategies that include habitat management, dispersal techniques, and strict reporting requirements precisely because the strike risk is so predictable and location-specific.

Windows and buildings

This is where the numbers get genuinely alarming. Estimates put annual bird deaths from building collisions in the U.S. at 365 million to 988 million, with a median around 599 million. The USGS cites figures as high as two billion. Contrary to what most people assume, the problem isn't mostly skyscrapers. Low-rise buildings (one to four stories) account for 56% of collision mortality, and residential homes account for 44%. High-rises contribute less than 1% of total fatalities. Your house windows are far more dangerous to birds than a downtown office tower.

Roads and vehicles

Vehicle collisions are considered one of the top five direct causes of bird mortality in the U.S., killing between 89 million and 340 million birds annually. Birds that nest near roads are especially vulnerable, and certain species like pheasants, turkeys, grouse, and juvenile waterfowl are hit disproportionately often because of where and how they move.

Who's most at risk, and when

The timing and location of bird strikes follows predictable patterns. For window collisions at homes, strikes peak during spring and fall migration, and dawn and dusk are the highest-risk times of day. Migrating birds are disoriented and moving in unfamiliar territory, which makes reflective glass especially deadly. Homes surrounded by trees and vegetation that birds find attractive are at higher risk because the windows reflect exactly what birds are looking for.

For aviation, migration season also drives risk. Strikes at higher altitudes are almost entirely a migration phenomenon. At lower altitudes, the year-round presence of resident bird populations near airports keeps the baseline risk consistently elevated. Certain bird groups are disproportionately dangerous: waterfowl represent about 4% of reported strikes but account for roughly 27% of strikes that cause aircraft damage, largely because of their size and flocking behavior.

For vehicle collisions on roads, risk is higher on rural roads near wetlands, agricultural fields, and forest edges, particularly at dawn and dusk when birds are most active and visibility is lowest.

Bird strikes vs. other bird-related hazards: some perspective

People often fixate on aviation bird strikes because of high-profile incidents, but the actual fatality numbers in aviation are lower than you might expect. Between 1988 and October 2024, 499 human fatalities and 361 aircraft destroyed globally were attributed to wildlife strikes across both military and civil aviation. That's a serious number, but spread across 35-plus years and billions of flights, it represents a relatively small per-flight risk.

Meanwhile, understanding whether bird strikes are dangerous requires separating the type of strike from the outcome. The proportion of aviation strikes causing aircraft damage has actually fallen from 6% in 1996 to 3.7% in 2024, reflecting the impact of better mitigation. So the trend is improving even as raw strike counts increase.

If you're thinking about risk to birds themselves, window collisions dwarf every other human-caused threat except habitat loss. Hundreds of millions of birds die at windows and buildings every year in the U.S. That's a far larger mortality source than aviation strikes, power line electrocution, or most other hazards people commonly worry about.

Bird strikes in aviation: the real numbers at a glance

How these risks compare across settings

A note on that aviation row: those are reported strikes, not bird deaths. The actual number of birds killed in aviation is much smaller than the building or vehicle figures, which are bird mortality estimates. How common bird strikes are on planes is a separate question from how many birds die in them, since many reported aviation strikes cause no injury to the aircraft and involve small birds.

What you can actually do to reduce the risk

At home (windows and glass)

The most effective approach combines multiple strategies rather than relying on a single fix. The U.S. Fish and Wildlife Service is explicit about this: window treatments work best when combined with changes to lighting and reflection cues. Here's what actually helps:

• Apply window treatments that break up reflections: frosted film, UV-reflective tape, exterior screens, or closely spaced decals (spaced no more than 2 inches apart horizontally and 4 inches vertically)
• Move bird feeders either very close to windows (less than 3 feet) or far away (more than 30 feet) to reduce fatal approach speeds
• Turn off or dim interior lights at night, especially during spring and fall migration, to reduce light attraction for nocturnal migrants
• Point exterior lights downward and shield them to prevent light from drawing birds toward reflective surfaces
• Close blinds or curtains at night when interior lighting is on and migration is peaking

The Audubon Society's "Lights Out" program promotes turning off nonessential exterior lighting during migration periods, and the Bird Collision Prevention Alliance recommends angling outdoor lights away from windows and reducing landscape features that create reflected habitat cues. Both of these are low-cost changes that make a real difference.

On the road

• Slow down near wetlands, open fields, and forest edges at dawn and dusk
• Be especially alert in fall and spring when juvenile birds are dispersing and migrants are moving through unfamiliar territory
• Avoid sudden speed increases when birds are feeding on or near the road surface

For aviation and airport environments

If you work in or around airports, the FAA and USDA APHIS Wildlife Services provide detailed guidance on layered mitigation: habitat management (removing standing water, tall grass, and food sources), active dispersal techniques, and rigorous strike reporting. Whether bird strikes are dangerous for planes depends significantly on whether the airport has a current wildlife hazard management plan in place. Reporting every confirmed strike is the foundation of the whole system, since that data drives what mitigation gets funded and where.

The bottom line

Bird strikes are not rare events. They happen millions of times a year across different environments in the U.S. The risk to human life in aviation is real but has been declining as mitigation improves. The risk to birds from windows and vehicles is enormous and largely under-addressed, especially at homes and low-rise buildings. If you're a homeowner, applying window treatments and reducing nighttime lighting during migration season are the two highest-impact steps you can take today. If you're a frequent flyer, the aviation system has made measurable progress, and your actual per-flight risk from a damaging strike remains very low.