Rapid expansion overcomes inbreeding in cross-hemisphere colonization of Barn Swallows
Valentina Gómez‐Bahamón, Juan Ignacio Areta, Jeremy Summers, Cristian Torres, Facundo Ariel Gandoy, Mingzuyu Pan, Zachary A. Szpiech, David P. L. Toews
The paper shows how Barn Swallows overcame inbreeding challenges by expanding rapidly through behavioral flexibility and genetic variation during cross-hemisphere colonization.
bioRxiv · Jul 17, 2026 · PreprintEvolutionary Biology