Special publication, 1997
Third edition, 2010
Dedication
The Ornithological Council dedicates this 2010 revision to
Lewis W. Oring
and the late Abbot (Toby) S. Gaunt
whose commitment to the well-being of the birds for whom
ornithologists share a deep and abiding concern has served
our profession well for so many years.
Guidelines (English)
Guia (Español)