Scientists identify previously unknown 'hybrid zone' between hummingbird species

Phys.org - Tue 17 Sep 19

We usually think of a species as being reproductively isolated—that is, not mating with other species in the wild. Occasionally, however, closely related species do interbreed. New research ...

Scientists identify previously unknown 'hybrid zone' between hummingbird species, ScienceDaily - Tue 17 Sep 19
Scientists identify previously unknown 'hybrid zone' between hummingbird species, Eurekalert - Tue 17 Sep 19