Supplements to the AOU Check-list of North American Birds, 7th edition, are published annually in the July issue of The Auk. Each supplement incorporates changes accepted in proposals considered by the committee from mid-year of one year to mid-year of the next.  Prior to 2012, proposals were numbered by the first year of the two years (i.e., proposals numbered 2011 covered the year 2011-2012, proposals numbered 2010 covered the year 2010-2011, etc.).  Beginning with 2012, proposals are numbered by the second year which corresponds to the published supplement (i..e., proposals numbered 2013 cover the year 2012-2013 and are published in the July 2013 issue of The Auk).  Because of this change, no proposals are numbered 2012.

2018 Proposals (59th supplement)

2017 Proposals (58th supplement)

2016 Proposals (57th supplement)

2015 Proposals (56th supplement)

2014 Proposals (55th supplement)

2013 Proposals (54th supplement)

2011 Proposals (53rd supplement)

2010 Proposals (52nd supplement)

2009 Proposals (51st supplement)

2008 Proposals (50th supplement)

2007 Proposals (49th supplement)