| Total Species | Count Date | Observers |
| 203 | 5/14/2003 | A. Brees, S.J. Dinsmore,
R. Silcock |
| 175 | 5/14/2000 | S.J. Dinsmore, J. Fontaine,
R. Silcock |
| 173 | 5/12/1999 | S.J. Dinsmore, D.C. Ely,
J. Fontaine |
| 162 | 5/15/1993 | M.A. Brogie, P. Wickham |
| 157 | 5/20/1989 | S.J. Dinsmore, R. Silcock |
| 150 | 5/12/1993 | M.A. Brogie, B. Huser |