Cliff Swallow

Overview

The Cliff Swallow is a highly social, colonial swallow found across much of North America, best known for constructing gourd-shaped mud nests in dense clusters on cliff faces, bridges, culverts, and building eaves. Its plumage combines dark upperparts with a distinctive pale buffy rump patch, a chestnut face and throat, and a pale patch on the forehead that helps distinguish it from other swallow species.

Upperparts are dark blue-black, contrasting with a pale, buffy-orange rump that is especially conspicuous in flight, while the face and throat show rich chestnut coloring set off by a pale, often creamy-white forehead patch.

Feather ID Notes

Cliff Swallow feathers show a dark blue-black back and crown, a pale buffy-orange rump patch that stands out clearly in flight, and rich chestnut coloring on the face and throat. A pale, often whitish or creamy forehead patch contrasts with the darker crown.

• Back/crown feathers: dark blue-black, glossy
• Rump feathers: pale buffy-orange, a key field mark visible in flight
• Face/throat feathers: rich chestnut
• Forehead patch: pale whitish to creamy, contrasting with the dark crown The pale buffy rump combined with the chestnut face and pale forehead patch readily separates this species from Barn Swallow, which lacks the pale rump and shows a deeply forked tail, and from Cave Swallow, which shows a paler, more orange-buff throat.

Plumage Details

Sexes look alike in this species, both showing the same dark back, pale rump, and chestnut face pattern. Juveniles are notably duller, with less defined chestnut coloring and a browner overall appearance until their first complete molt. There is no distinct seasonal plumage change, though feather wear can slightly dull the rump and face coloring later in the breeding season.

Habitat & Range

Cliff Swallows breed across much of North America, nesting colonially on natural cliff faces as well as a wide variety of human-made structures such as bridges, culverts, and building eaves, typically near open country used for foraging. They are long-distance migrants, wintering in South America, and are known for their large, dense breeding colonies that can include hundreds of nests.

Behavior & Field Notes

This species forages on the wing in open airspace, often over fields, water, or other open habitat, catching flying insects in flight. Diet consists almost entirely of flying insects. Nests are distinctive gourd-shaped structures built from mud pellets, constructed in large, densely packed colonies attached to vertical surfaces. Calls include a variety of squeaky, chattering notes given both in flight and at the nest colony.