Few birds survive on a diet that would kill almost any other animal on the planet. Vultures pull this off with a digestive system that runs at roughly 108 degrees, hot enough to destroy cholera, anthrax, salmonella, and E. coli before those pathogens ever reach the bloodstream.
That kind of biological engineering belongs to the types of vultures in Iowa that circle cornfields, riverbanks, and small towns every spring through fall. Iowa is home to two species, one common and one still working its way north, and learning to tell them apart makes every backyard sighting more interesting.
Introduction to Types of Vultures in Iowa
Vultures are large birds of prey with a head or neck that is often devoid of feathers, a trait that keeps them clean while feeding on carrion. Worldwide, there are 23 recognized vulture species, but only a small fraction of those live anywhere near North America. Two of those species show up in Iowa: the turkey vulture and the black vulture. The turkey vulture is the one Iowans are used to seeing, appearing reliably from spring through fall in every corner of the state. The black vulture is the newer arrival, a bird whose range has historically centered on Texas and Oklahoma but has been pushing steadily north. Readers curious about how these two compare to vulture populations elsewhere can check out related coverage of the types of vultures in Texas, the types of vultures in Tennessee, or even the very different lineup found across the types of vultures in Kenya. For a broader global count, the article on how many types of vultures exist worldwide puts Iowa’s two species into context.
Pro Tip: If you see a group of vultures circling high overhead, birders call that a “kettle.” A group perched together in trees is called a “wake.”
Understanding Types of Vultures in Iowa
The turkey vulture (Cathartes aura) is by far the more familiar of the two species. According to iNaturalist’s species guide, it is one of three species in the genus Cathartes and ranges from southern Canada all the way to the southern tip of South America. In Iowa, the bird is unmistakable once a person knows what to look for.
Adult turkey vultures generally weigh three to five pounds, with a wingspan that can stretch to six feet. They get their name from a featherless red head that resembles a wild turkey, sitting atop a brownish-black body. When gliding, their wings form a distinct, wobbly “V” shape rather than the flat profile used by hawks and eagles, and the underside of the wings shows a two-toned gray pattern that separates them from lookalikes at a distance. Turkey vultures are strictly scavengers. They feed mostly on dead prey such as roadkill or carrion and will not attack live animals, which makes them one of the least threatening large birds in the state despite their imposing size. According to an analysis of eBird checklist data from Bird Advisors, turkey vultures appear in roughly 32 percent of summer checklists submitted across Iowa, and most sightings run from March through October, though a few individuals stick around all winter.
The black vulture (Coragyps atratus) tells a different story. Unlike its red-headed cousin, it has an all-black head and neck, a sooty-black body, and white or gray patches near the wingtips that show up clearly from below when the bird is in flight. A wildlife biologist with USDA Wildlife Services covering Missouri and Iowa noted that milder winters appear to be one reason the species keeps pushing into new territory, since less severe cold means more year-round food availability for a bird whose range historically stopped much farther south.
The behavioral gap between the two species matters as much as the visual one. Purdue University researcher Marian Wahl, who studies black vulture management, has observed that black vultures strongly prefer scavenging overall, but the species is also known to gang up on and injure newborn calves, piglets, and lambs, something turkey vultures essentially never do. A Missouri Extension publication on nuisance vultures put it plainly: black vultures are more aggressive than their turkey vulture cousins and have been documented preying on livestock in ways the other species has not.
| Feature | Turkey Vulture | Black Vulture |
|---|---|---|
| Head Color | Bald, bright red | Bald, all black |
| Body Color | Brownish-black | Sooty black |
| Wingspan | Up to 6 feet | About 5 feet |
| Weight | 3 to 5 pounds | About 5 pounds |
| Flight Silhouette | Wings raised in a shallow V, wobbly glide | Flatter wings, faster wingbeats between glides |
| Diet Behavior | Carrion only, never attacks live prey | Mostly carrion, occasionally preys on weak newborn livestock |
| Status in Iowa | Common, widespread March through October | Uncommon but increasing, mostly seen in southern Iowa |
Local reporting backs up this pattern. A Guthrie Center wildlife officer told a local newspaper that Iowa has experienced a decades-long increase in turkey vultures, and more recently the state has also started seeing more black vultures, though most nuisance complaints still trace back to turkey vultures rather than their black-headed relatives. Anyone tracking Iowa’s broader wildlife shifts might also find it useful to compare notes with related state guides on types of bats in Iowa or types of snakes in Iowa, since range expansion driven by warming winters is a theme across several species groups.
Practical Guidance on Types of Vultures in Iowa
Spotting and correctly identifying Iowa’s vultures gets easier with a few field habits. Turkey vultures are most reliably seen soaring overhead or perched on high structures such as road signs, power lines, cliffs, and dead trees, and they often roost or feed in groups near open fields and roadsides.
The following identification checklist covers what to watch for on a typical outing:
- Head color — bright red on turkey vultures, solid black on black vultures
- Flight pattern — a wobbly V-shaped glide usually signals a turkey vulture, while flatter, more controlled wings with more frequent flapping point to a black vulture
- Wingtip pattern — turkey vultures show gray along the trailing edge of the underwing, while black vultures show pale patches concentrated near the tips
- Location — turkey vultures turn up statewide, while black vulture sightings in Iowa still lean toward the southern part of the state
- Group behavior — both species roost communally, but a very large, aggressive-acting group near livestock is worth reporting to a local wildlife agency
Both species carry legal protection. Under the Migratory Bird Treaty Act of 1918, it is illegal to possess or kill turkey vultures in the United States, and the Iowa DNR notes that violations can bring a fine of up to $15,000 and up to six months in prison. Black vultures carry the same federal protection, which is part of why livestock producers dealing with aggressive birds are directed toward nonlethal deterrents rather than removal.
Important Note: Because both vulture species are federally protected, homeowners and farmers cannot legally trap, harm, or kill them without a permit. Deterrence, not removal, is the only legal do-it-yourself option.
For property owners dealing with an unwanted roost, wildlife agencies recommend working through less disruptive options first before escalating. Michigan’s Department of Natural Resources, which publishes some of the most detailed public guidance on vulture conflicts, suggests the following approach:
- Remove abandoned structures, dead trees, or large horizontal branches that make attractive perches
- Secure garbage in tightly sealed containers and keep compost covered, since exposed food waste and carrion are the biggest draws
- Install physical deterrents such as bird spikes or angled ledge covers on rooflines, ledges, and other frequently used perches
- Add motion-activated sprinklers, noise devices, or reflective scare tools, and keep using them consistently until the birds relocate
- Contact USDA Wildlife Services for guidance on installing an effigy, which wildlife agencies describe as one of the most effective roost deterrents available
Pest control specialists add that promptly disposing of roadkill or other carcasses on a property removes the single biggest incentive for either species to linger, and that consistent hazing, rather than a one-time scare tactic, is usually needed before a roost moves on for good. Anyone dealing with a serious infestation involving dozens of birds is generally better served calling a wildlife control professional than attempting large-scale removal alone.
Farmers and ranchers face a different calculation. Because black vultures have been documented targeting newborn calves, lambs, and piglets during birth, Missouri Extension recommends increased supervision during calving and lambing season in areas where black vultures have become established, along with prompt removal of afterbirth and stillborn animals that might otherwise attract a roost. For readers interested in how other Iowa wildlife groups are shifting with the climate, the guides on types of frogs in Iowa and types of butterflies in Iowa cover similar seasonal patterns worth watching.
Conclusion
Iowa’s two vulture species split the workload of nature’s cleanup crew in different ways. The turkey vulture remains the dependable, harmless scavenger seen statewide from spring through fall, while the black vulture is a newer, bolder presence still expanding its footprint north from historically southern territory.
Both birds play an outsized role in controlling the spread of disease from decomposing carcasses, and both are protected under federal law regardless of how a landowner feels about having them nearby. Learning to read the head color, wing shape, and flight pattern of each species turns a startling sighting into a genuinely interesting piece of backyard birding.
Iowa’s bird life extends well beyond these two scavengers. Readers who enjoyed learning about the state’s vultures might also want to explore the different types of purple birds found across North America, the many types of birds that are blue, or the colorful different types of hummingbirds that visit backyards throughout the Midwest each summer.