Birds Active during the day

Cliff Swallow

Petrochelidon pyrrhonota

iNaturalist eBird Wikipedia

Master architects of the bird world, Cliff Swallows build intricate mud cities under bridges and eaves. Look for their distinct buff rumps and square tails as they perform incredible aerial acrobatics across the summer sky.

0 Sightings

0 Habitats

Quick Identification

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Size

Length: 5.1-5.9 in (13-15 cm); Wingspan: 11.0-11.8 in (28-30 cm); Weight: 0.7-1.1 oz (19-31 g)

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Colors

Iridescent blue-black back and crown, rich chestnut-red face and throat, creamy-white forehead patch, and a distinct pale buff or orange rump.

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Key Features

Pale buff-colored rump patch visible in flight
Square-ended tail, unlike the deeply forked tail of Barn Swallows
Gourd-shaped mud nests built on vertical surfaces
White to pale-cream forehead patch

When You’ll See Them

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Activity pattern Active during the day

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Peak hours 7-11 AM, 3-7 PM

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Season April-August

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Diet Strictly aerial insectivores that hunt flying insects like flies, beetles, winged ants, and bees, often foraging in large coordinated groups.

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Habitat Open areas near water, including grasslands, agricultural fields, and suburban areas near bridges, overpasses, or cliffs.

public Geographic range

Where Does the Cliff Swallow Live?

Native to the North American continent, the Cliff Swallow maintains a vast breeding range that extends from the subarctic regions of Alaska and Canada down through the United States and into Central Mexico. These birds are long-distance migrants, spending the northern winter months in the southern half of South America, primarily in Argentina, Uruguay, and southern Brazil. They are highly adaptable and have actually expanded their range in recent decades by utilizing man-made structures like bridges and highway culverts for nesting sites.

Basemap © OpenStreetMap contributors

7 Countries

14.5M km² Range

Least Concern Conservation

US United States CA Canada MX Mexico AR Argentina UY Uruguay BR Brazil PY Paraguay

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iNaturalist / Verified observation data

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Behavior

Cliff Swallows are highly social birds, famous for their massive nesting colonies that can consist of hundreds, or even thousands, of individual mud nests clustered together. They are aerial insectivores, meaning they spend nearly all their active hours on the wing, darting and weaving through the air to catch flying insects. Their flight is characterized by more soaring and gliding than the constant flapping of other swallow species.

These birds are known for their 'information centers'—the colony itself serves as a place where individuals watch their neighbors to see who is returning with a full crop, indicating a successful foraging patch. While they are generally tolerant of human activity, they can be quite vocal around their nests, using a variety of chattering calls to communicate with colony members. Their social complexity extends to their nesting habits, where they occasionally lay eggs in a neighbor's nest, a behavior known as brood parasitism.

photo_camera EverydayEarth exclusive

Camera Tips

Capturing Cliff Swallows on a backyard camera requires focusing on their unique nesting and resource needs rather than traditional bird feeders. Because they are aerial hunters, they will never visit a seed or suet station. Instead, if you have a structure on your property like an eave or a porch where they might nest, mount your camera at a 45-degree angle to the wall about 6-10 feet away. Use a high-speed motion trigger or 'burst mode' to capture the fast-paced action of birds hovering and entering their mud-domed homes.

During the spring building season (typically April and May), you can create a 'camera trap' by providing a mud source. In dry areas, swallows struggle to find building materials; a shallow tray of wet clay or a consistently damp patch of soil will attract dozens of swallows. Place your camera on a ground-level tripod or a low mount, focusing on the mud patch. This is one of the few times these birds will land on the ground, offering a rare opportunity for high-detail, close-up photography of their plumage.

For the best lighting, ensure your camera is positioned with the sun behind it, especially during the 'golden hours' of early morning or late afternoon. This lighting will make their iridescent blue backs and buff-colored rumps glow. Because they move incredibly fast, set your camera to the fastest possible shutter speed—ideally 1/1000th of a second or higher—to avoid motion blur. If using a trail camera, ensure the PIR (passive infrared) sensor is on its most sensitive setting, as their small body size and rapid flight can sometimes fail to trigger slower sensors.

Similar Species

Species that look similar or are commonly confused with Cliff Swallow.

Barn Swallow

Has a deeply forked tail and a dark blue rump, whereas the Cliff Swallow has a square tail and a pale buff rump.

Cave Swallow

Very similar but has a dark cinnamon forehead patch, unlike the white or pale creamy forehead patch of the Cliff Swallow.

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Frequently Asked Questions

Cliff Swallows are most active during the daylight hours, with peak foraging activity occurring in the mid-morning and late afternoon when insect activity is highest. They are rarely seen moving after dusk.

You cannot attract them with food, but you can attract them with building materials. Providing a dedicated mud puddle or a tray of wet clay during April and May can encourage them to nest nearby. They also prefer open spaces near water.

They are 100% insectivores. They feed on a wide variety of flying insects, including flies, beetles, wasps, and winged ants, which they catch mid-air using their wide gapes.

Yes, they have become very common in suburbs because they love nesting on man-made structures like bridges, overpasses, and under the eaves of houses near open parks or water sources.

Look at the tail and the rump. Cliff Swallows have a square-tipped tail and a pale orange/buff rump patch, while Barn Swallows have a deeply forked 'swallow-tail' and a dark rump.

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