Convergent Evolution in Social Swallows (Aves: Hirundinidae)
On the Cover: Cliff swallows (Petrochelidon pyrrhonotoa) collecting mud for use in nest building. Social swallow species, such as the cliff swallow have converged on smaller, more constrained morphological traits than solitary swallow.
Photograph by Joel G. Jorgensen
Allison E. Johnson, Jonathan S. Mitchell and Mary Bomberger Brown. 2017. Convergent evolution in social swallows (Aves: Hirundinidae). Ecology and Evolution 7(2): 550–560.
Mary Bomberger Brown is a research assistant professor in the School of Natural Resources.
