by Josep del Hoyo, Andrew Elliott, Jordi Sargatal, and David A. Christie
New species descriptions, a photo gallery, essays, and a global index highlight this update to a landmark series.
October 29, 2013
by Josep del Hoyo, Andrew Elliott, Jordi Sargatal, and David A. Christie
New species descriptions, a photo gallery, essays, and a global index highlight this update to a landmark series.