| Year | Number of Bird Species Seen | Location |
| 1979 | 127 | Florida |
| 1980 | n.a. | Texas |
| 1981 | 166 | Arizona |
| 1982 | 213 | Southern California |
| 1983 | 182 | Colorado |
| 1984 | 113 | Bahamas |
| 1985 | 142 | Newfoundland |
| 1986 | n.a. | Florida |
| 1987 | 178 | Washington, Oregon, British Columbia |
| 1988 | 157 | Arizona, Utah |
| 1989 | 180 | Texas |
| 1990 | 100 | Florida |
| 1991 | 216 | Dakotas, Montana, Alberta,Saskatchewan |
| 1992 | 192 | California |
| 1993 | 153 | New Brunswick, Quebec, Novia Scotia, Maine |
| 1994 | 208 | Arizona, Utah |
| 1995 | 203 | Washington, British Columbia |
| 1996 | 196 | Southern California, Arizona |
| 1997 | 162 | Colorado, Utah, Nevada |
| 1998 | 161 | Colorado, Utah |
| 1999 | 152 | Dakotas, Wyoming, Montana, Minnesota |
| 2000 | 150 | British Columbia, Washington, Oregon, Utah |
| 2001 | 109 | Utah, Colorado, Arizona, Nevada |
| 2002 | 164 | Western and Southern Texas, New Mexico |
| 2003 | 169 | Arizona |
| 2004 | 142 | Northern California |
| 2005 | 162 | Utah, Colorado, Arizona |
| 2006 | 221 | Southern California and Arizona |
| 2007 | 242 | New Mexico, Arizona, and Texas |
| 2008 | 103 | Arizona, Utah, and Colorado |
| 2009 | 114 | New Brunswick, PEI, Nova Scotia, and Newfoundland |