A large new study of ovenbird lineages questions the extent to which competing species push each other to evolve. In 1982, a few large ground finches took up residence on the tiny island of Daphne ...
The medium ground finch (Geospiza fortis), shown here, diverged in beak size from the large ground finch (Geospiza magnirostris) on Daphne Major Island, Galápagos following a severe drought. Genomic ...