Why are tropical mountain passes "low" for some species? Genetic and stable-isotope tests for differentiation, migration and expansion in elevational generalist songbirds.
Gadek CR, Newsome SD, Beckman EJ, Chavez AN, Galen SC, Bautista E, Witt CC. Why are tropical mountain passes "low" for some species? Genetic and stable-isotope tests for differentiation, migration and expansion in elevational generalist songbirds. J Anim Ecol. 2018 05; 87(3):741-753.