Birds Active during the day

Cave Swallow

Petrochelidon fulva

iNaturalist eBird Wikipedia

The Cave Swallow is an aerial acrobat and a master of adaptation. From the deep limestone sinkholes of the Caribbean to the highway overpasses of Texas, these cinnamon-throated flyers are redefining where wildlife calls home.

0 Sightings

0 Habitats

Quick Identification

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Size

Length: 12-14 cm (4.7-5.5 in); Wingspan: 28-31 cm (11-12.2 in); Weight: 17-21 g (0.6-0.7 oz)

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Colors

Pale cinnamon or buff-colored forehead and throat; dark metallic blue back with fine white streaks; pale orange-buff rump; grayish-white underparts.

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Key Features

Pale cinnamon-buff throat and forehead
Square-shaped tail with no deep fork
Distinct pale orange or buffy rump
Small, stocky build with pointed wings

When You’ll See Them

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Activity pattern Active during the day

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Peak hours 7-10 AM, 4-7 PM

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Season March-August

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Diet Strictly insectivorous; they forage in flight, catching beetles, flies, wasps, bees, and winged ants mid-air.

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Habitat Open country near water, limestone caves, sinkholes, and urban infrastructure like bridges and culverts.

public Geographic range

Where Does the Cave Swallow Live?

Native to the Americas, the Cave Swallow's range is centered in Mexico and the Caribbean islands, with a rapidly expanding breeding population in the southwestern United States and Florida. While Caribbean populations are largely resident, those breeding in Texas and New Mexico are migratory, moving south into Mexico and Central America for the winter months. Occasionally, they are found as far south as the coastal regions of Peru and Ecuador during the non-breeding season.

Basemap © OpenStreetMap contributors

8 Countries

3.5M km² Range

Least Concern Conservation

MX Mexico US United States Cuba Dominican Republic Haiti Jamaica Puerto Rico PE Peru

Elevation range

0 m1,000 m2,000 m4,000 m

Sea level – 2,000 m

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iNaturalist / Verified observation data

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Behavior

Cave Swallows are highly social and gregarious birds, almost always found in colonies that can range from a few dozen to several thousand individuals. They are masters of the air, spending the vast majority of their daylight hours on the wing. Their flight is characterized by rapid, rhythmic wingbeats interspersed with short glides as they hunt for flying insects. Unlike many other swallows, they historically relied on the dark ceilings of caves and sinkholes for nesting, but in recent decades, they have become famous for their rapid adaptation to man-made structures.

These birds are not particularly shy around humans and are frequently seen swooping under bridges or over highway medians. While they are territorial of their specific nesting site within a colony, they forage together in large, loose flocks, often mixing with other swallow species. They are vocal throughout the day, emitting a variety of soft, melodic warbles and sharp 'cheep' calls that help maintain contact with the flock.

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Camera Tips

To capture high-quality footage of Cave Swallows, focus your efforts on their nesting or roosting sites. If you live near a concrete bridge or culvert where they are known to nest, mount your camera at an upward angle facing the junction of the wall and ceiling. Since they build cup-shaped mud nests, a distance of about 10 to 15 feet is ideal—it is close enough to see the detail of the cinnamon-buff plumage but far enough to avoid disturbing their nesting cycle.

These birds move at incredible speeds, so your camera settings are crucial. Use a high shutter speed or 'Sports Mode' to minimize motion blur during their rapid entries and exits. If your AI camera has a pre-trigger or 'Pre-Roll' feature, enable it; swallows often fly so fast that they can enter and exit a frame before a standard motion sensor triggers the recording. Fast-trigger speeds are the most important hardware spec for this species.

For backyard enthusiasts, you are unlikely to attract Cave Swallows to a traditional bird feeder. Instead, try placing a camera near a permanent water source or a shallow mud puddle. During the spring nest-building season (March to May), they frequently land on the ground to collect mud. Positioning a camera at ground level near a muddy patch with a wide-angle lens can provide stunning, intimate views of these birds as they work. During the heat of the afternoon, they also perform 'touch-and-go' dips in ponds to drink, which is a great time to capture action shots.

Similar Species

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

Cliff Swallow

Cliff Swallows have a dark chestnut-colored throat and a prominent white forehead, whereas Cave Swallows have a pale cinnamon-buff throat and forehead.

Barn Swallow

Barn Swallows feature a very long, deeply forked tail and much darker blue-black upperparts compared to the square tail of the Cave Swallow.

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Frequently Asked Questions

Cave Swallows are diurnal and most active during daylight hours. Their activity peaks in the early morning and late afternoon when flying insects are most abundant, though they will forage throughout the day during the breeding season to feed their young.

You won't find Cave Swallows at seed feeders. To attract them, provide a consistent mud source in the spring for nest building and avoid using pesticides in your yard, as they rely entirely on a healthy population of flying insects for food.

They are insect specialists that feed exclusively on the wing. Their diet includes a wide variety of flying insects such as mosquitoes, gnats, winged ants, small beetles, and flies.

Yes, they have become very common in suburban and urban areas throughout the southern US and Mexico because they have learned to use bridges, culverts, and buildings as substitutes for their traditional cave nesting sites.

Check the throat and forehead: Cave Swallows have a pale cinnamon-buff throat and forehead. In contrast, Cliff Swallows have a dark chestnut throat and a white or cream-colored forehead patch.

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