Hawks screech because they are communicating, not because they are agitated or restless by default. Each call carries a specific message, from staking a territorial claim to begging for food to warning nestmates about an approaching threat. What sounds like constant, repetitive noise to a human listener is a structured vocal system that changes with the season, the hawk’s sex, and the social context. If you are hearing a hawk screech over and over, the timing and setting usually reveal what it is saying.
Not One Screech but Several
The popular image of a hawk call is a single dramatic cry, but most hawk species produce a range of distinct vocalizations, each tied to different situations. Ridgway’s Hawk, for example, uses at least three basic call types: a “Kleeah” given in aggressive or self-assertive contexts, a “Weeup” used during food exchanges and courtship displays, and a “Whistle-Squeal” reserved for high-intensity encounters like territorial fights or close-range threats.1The Condor: Ornithological Applications. Breeding Season Ecology and Behavior of Ridgway’s Hawk (Buteo ridgwayi) Mountain Hawk-Eagles in Taiwan were found to produce at least seven types of vocalization, with certain calls heard year-round and others appearing only during the breeding season or near the nest.2Global Ecology and Conservation. Vocal behavior of the Mountain Hawk-Eagle Nisaetus nipalensis in Taiwan
So when you hear what sounds like the same screech repeated endlessly, you may actually be hearing the hawk’s most common call type, usually a territorial or contact call. The less frequent vocalizations, the ones tied to food transfer, alarm, or courtship, tend to be shorter, softer, or produced only during specific moments. They are easy to miss unless you are listening for them.
Territory and the “I Am Here” Call
The screech most people associate with hawks is typically a territorial advertisement. Red-tailed Hawks, the species whose call is most often heard (and most often borrowed by Hollywood to represent every raptor, including bald eagles), produce a raspy, drawn-out cry while soaring or perched at the edge of their territory. This call announces ownership of a patch of sky and ground. It tells neighboring hawks where the boundary is, and it tells potential intruders that the resident is present and willing to defend.
Territorial calling ramps up in intensity during the breeding season, when both the nesting territory and the food resources within it become critical for raising young. But it does not disappear in the off-season. Many hawk species produce some version of their territorial or “flying call” throughout the year. Mountain Hawk-Eagles, for instance, were recorded making their flying call in every month of the year, though the overall call rate varied with the breeding cycle.2Global Ecology and Conservation. Vocal behavior of the Mountain Hawk-Eagle Nisaetus nipalensis in Taiwan If you live near a hawk’s home range, this is likely the call you hear most often, and it may well sound constant during peak activity periods like early morning or late afternoon.
Breeding Season Turns Up the Volume
Hawks are loudest during the breeding season, and for good reason. Courtship involves vocal duets, aerial displays accompanied by calling, and frequent contact calls between mates as they coordinate nest building and food delivery. Studies of Cooper’s Hawks during the pre-incubation stage documented four different vocalizations tied specifically to nest-building, copulation, and other pre-laying activities. Researchers concluded that these calls signal presence, identity, location, dominance, and non-aggressive intent between mates.3The Condor: Ornithological Applications. Vocalizations of Cooper’s Hawks during the Pre-Incubation Stage
Some vocalizations exist only during the breeding period. In Mountain Hawk-Eagles, the female begging call, the juvenile begging call, and the alarm call were recorded exclusively during or near the breeding season and primarily around the nest site.2Global Ecology and Conservation. Vocal behavior of the Mountain Hawk-Eagle Nisaetus nipalensis in Taiwan If you notice a sudden explosion of hawk noise in your area during spring and early summer, the birds are not stressed or confused. They are courting, negotiating nest duties, and eventually feeding chicks, all of which demand vocal coordination.
Why the Female Is Often the Louder Hawk
One pattern that surprises many people is that female hawks tend to be more vocal than males, at least during certain phases of the breeding cycle. In Cooper’s Hawks, researchers found a pronounced asymmetry: compared to males, females had a larger repertoire of call types, called more frequently, and called during a wider range of activities during the pre-incubation period.3The Condor: Ornithological Applications. Vocalizations of Cooper’s Hawks during the Pre-Incubation Stage
The researchers attributed part of this difference to reversed sexual size dimorphism, the pattern where female hawks are substantially larger than males. In species with big size differences, the social dynamics between mates involve some negotiation. The female is physically dominant, and vocal signals help the smaller male approach without triggering an aggressive response. Frequent calling by the female may serve to direct the male’s behavior, request food, or indicate her position on the nest. If you are hearing a hawk calling repeatedly from a perch near a nest, there is a decent chance it is the female communicating with her mate rather than a male defending territory.
Alarm Calls and Nest Defense
When hawks screech in short, sharp, agitated bursts, they are almost always alarming. Alarm calls serve two audiences simultaneously: they warn the mate or nestlings that danger is near, and they tell the intruder that it has been detected. Hawks defending nests will call persistently at anything they perceive as a threat, from raccoons to people to, as one study documented, small drones. In observations of red-tailed hawks, ferruginous hawks, bald eagles, and ospreys responding to an approaching rotary-winged drone, researchers recorded all adult movements and vocalizations starting from about 100 meters away from the nest and continuing until the nest base was reached and the area was exited.4Journal of Unmanned Vehicle Systems. Nest defense behaviour of four raptor species (osprey, bald eagle, ferruginous hawk, and red-tailed hawk) to a novel aerial intruder – a small rotary-winged drone
Nest defense calling can seem relentless because the hawk will not stop until the threat leaves. If you walk near an active nest, you may hear a hawk screaming at you for the entire duration of your presence in the area. This is not random aggression. The hawk has a clear goal: drive you away. The calling often escalates if you move closer, sometimes accompanied by dive-bombing or aggressive swoops. The fix, if you find yourself the target, is simply to leave the area. The calling will stop once you are far enough from the nest.
What Juvenile Hawks Sound Like
Another common source of persistent hawk noise is juvenile begging calls. Once chicks fledge, they spend weeks following their parents and calling for food. These begging calls are high-pitched, repetitive, and can go on for hours as a young hawk perches in a tree waiting for a parent to return with prey. In late summer, when fledglings are still dependent but increasingly mobile, neighborhoods near hawk nests may hear an almost nonstop stream of begging calls during daylight hours.
Juvenile begging calls sound quite different from adult territorial screeches. They tend to be thinner, higher, and more plaintive. People often mistake them for injured birds or interpret the repetition as distress. In reality, the young hawk is doing exactly what it should be doing at that stage of life: loudly demanding to be fed while it practices hunting skills that are not yet reliable enough to sustain it.
How Other Animals Respond to Hawk Calls
Hawk vocalizations do not just affect other hawks. Smaller birds actively eavesdrop on hawk calls and change their behavior in response. In an experiment with male song sparrows, researchers played Cooper’s Hawk calls during a simulated territorial dispute between sparrows. The sparrows clearly discriminated between hawk calls and the calls of a non-threatening species. When they heard the hawk, they sang fewer songs, reduced their wing-wave displays, and increased their own alarm calling.5Behavioral Ecology. The sparrow and the hawk: aggressive signaling under risk of predation
Interestingly, the sparrows flexibly managed both threats at once. Once the hawk playback stopped and their territorial rival resumed singing, the sparrows went back to defending their territory even though their alarm calling indicated they were still nervous. This suggests that smaller birds do not simply freeze at the sound of a hawk. They weigh predation risk against other priorities in real time, adjusting their signaling strategies moment to moment.
The reverse dynamic also exists. Hawks themselves listen to the alarm calls of smaller birds. When researchers tested hawks and owls with recordings of passerine alarm calls (both mobbing calls and high-pitched “seet” alarm calls), hawks responded more often and more accurately to mobbing calls than to seet calls.6Ethology. Auditory Perception of Hawks and Owls for Passerine Alarm Calls Mobbing calls are the loud, conspicuous calls that songbirds produce when they harass a predator in the open. Hawks pay attention to these because a mob of small birds can reveal the hawk’s position or signal the presence of another predator nearby. The acoustic world hawks inhabit is a two-way conversation with the entire bird community around them.
Stress Calls in Captive and Handled Hawks
Not all hawk vocalizations fit neatly into functional categories like territory or courtship. Captive hawks and hawks being handled by humans can produce calls that are driven by physiological stress, even when they appear outwardly calm. A study of red-shouldered hawks in captivity used heart-rate telemetry to measure stress responses and found that nearly every stressor caused dramatic increases in heart rate, with the magnitude directly related to the degree of human contact involved. Crucially, these heart rate spikes occurred whether or not the hawk displayed any visible behavioral stress symptoms.7Zoo Biology. Management‐related stress in the red‐shouldered hawk
This finding matters because it means a hawk that looks calm but is calling persistently during handling or in a rehabilitation setting may actually be quite stressed. Falconers and wildlife rehabilitators know this intuitively, but the physiology confirms it. A hawk in a carrier, at a vet’s office, or on a glove at an education program may screech repeatedly not because it is communicating in the wild-type sense, but because it is in a state of acute arousal. The absence of visible panic does not mean the absence of distress.
How City Noise Is Changing Hawk Sounds
If you live in an urban area and feel like local hawks are getting louder or higher-pitched, the science supports that impression. Research on bird vocalizations along urban gradients found that increasing levels of anthropogenic noise and urbanization were associated with a rise in the dominant frequency of bird sounds for most species.8iScience. Anthropogenic noise and habitat structure shaping dominant frequency of bird sounds along urban gradients In plain terms, birds in noisier environments tend to pitch their calls higher, likely because higher frequencies stand out better against the low-frequency rumble of traffic, construction, and machinery.
The relationship is not perfectly linear, though. A related analysis found that while urbanization and low-frequency noise pushed dominant frequencies up, noise in a slightly higher frequency band had the opposite effect, pulling dominant frequencies down.9SSRN. Acoustic Adaptations of Urban Birds: Dominant Frequency Adjustments in Response to Anthropogenic Noise and Habitat Structures This means city birds are not simply getting louder across the board. They are adjusting their vocal frequencies to find acoustic windows in whatever noise environment they face. For hawks living near highways or in suburban developments, the screech you hear may be a modified version of what the same species sounds like in quiet forest, tuned to cut through traffic noise.
The Hollywood Hawk Problem
Part of the reason people think hawks screech “constantly” is cultural rather than biological. The red-tailed hawk’s raspy, descending cry is one of the most overused sound effects in film and television. It is dubbed over shots of bald eagles, peregrine falcons, golden eagles, and even vultures, none of which sound anything like a red-tailed hawk. It is also played during establishing shots of deserts, mountains, and open landscapes where no hawk may be present at all. The result is that the red-tailed hawk’s call has become a generic symbol for “wildness” or “danger from above,” and most people hear it far more often on screens than they do in nature.
This constant media exposure creates a perception that hawks are noisier than they really are. In practice, a red-tailed hawk may call only a handful of times during a soaring session, and many hunting flights are completely silent. The Hollywood convention also trains people to notice and remember real hawk calls when they do hear them, reinforcing the impression of constant screeching through a kind of confirmation bias.
When Silence Matters More Than Sound
Hawks are actually quiet for much of their lives, and the quiet phases are just as meaningful as the noisy ones. During active hunting, most hawks go silent. Sound would alert prey, and hawks that hunt from a perch or stoop from height rely on surprise. A red-tailed hawk sitting motionless on a telephone pole, scanning a field below, is not going to announce itself. The screeching resumes after the hunt, when the hawk returns to its territory, approaches its mate, or encounters a rival.
Incubating hawks also tend to be quiet. A bird sitting on eggs does not want to advertise the nest location to crows, raccoons, or other predators. The mate may call from a distance to announce food delivery, and the incubating bird may respond softly, but the screaming territorial displays of early courtship give way to relative silence during the most vulnerable phase of nesting. If a hawk that was noisy for weeks suddenly goes quiet, that can be a sign that eggs have been laid and incubation has begun.
Migration is another quiet period for many species. Hawks on long-distance flights conserve energy and have no territory to defend along the way. Hawk-watching sites where thousands of birds stream past during fall migration are often eerily silent despite the spectacle overhead. The birds save their voices for the places and seasons where vocal communication actually pays off.