About the Author(s)

Steven Mlodinow received his B.A. from Bowdoin College in 1984 and his M.D. from the University of California at San Diego School of Medicine in 1989. He has authored three books and more than fifty peer-reviewed articles pertaining to ornithology, with a special interest in biogeography and status-and-distribution. Steven served as a regional editor for North American Birds (and its predecessors) from 1999 to 2009 and again from 2012 to 2015. He was a member of the Washington Bird Records Committee from 1999 to 2015 and is currently a member of the Colorado Bird Records Committee. Goals for the near future include investigating potential full-species status for several taxa endemic to Baja California Sur, including the Cape Pygmy-Owl (Glaucidium gnoma hoskinsii), the San Lucan Vireo (Vireo cassinii lucasanus), and the San Lucan Robin (Turdus migratorius confinis).

Guy Kirwan was born in northwest England and has been a birdwatcher for more than 40 years. Despite an honors degree in History and English literature, he has never worked in any other field but ornithology. Primarily an editor of monographs, field guides and other bird books, he worked on two volumes of The Handbook of the Birds of the World, between 2012 and 2019 he updated or wrote more than 3,300 accounts for HBW Alive, and in 2011 he was also heavily involved with producing some of the first texts for Neotropical Birds, all of them precursors to Birds of the World. He has conducted ornithological field research in Turkey, Yemen and Socotra, Brazil, and Cuba, and has published widely in the technical literature on birds. Following ten years living part-time in Brazil, he is again residing in Norwich, in eastern England, and is a Scientific Associate of the Bird Group, at the Natural History Museum, Tring, although he also maintains professional associations with the Field Museum of Natural History, in Chicago, and the Museu Nacional, in Rio de Janeiro.