Cliff swallow (Petrochelidon pyrrhonota) from Birds of the World Online

Smaller brained cliff swallows are more likely to die during harsh weather

Ecological correlates of group integrity among dispersing cliff swallows

Variation in neophobia among cliff swallows at different colonies

Barn swallow (Hirundo rustica) from Birds of the World online

Extreme group sizes in a colonial bird favored during a rare climatic event

Changing patterns of natural selection on morphology of cliff swallows during severe weather

Parasites favor intermediate nestling mass and brood size in cliff swallows

Why come back home? Breeding-site fidelity varies with group size and parasite load in a colonial bird

No detectable insecticide resistance in swallow bugs following long-term exposure to naled (Dibrom 8)