northern Illinois
September 27 - October 6, 2003, Blackhawk FP, Kane County (Scott Cohrs) (IORC 2003.029; SC, GW, TAM, JK, CF) (MJIB 14:2:60)
September 27 , Blackhawk FP, Kane County (Scott Cohrs) (MJIB 13:2:51-52) (MJIB 13:2:70)
September 28 , Blackhawk FP, Kane County (Scott Cohrs)
October 3, 2003, Blackhawk FP, Kane County (Jerry Kumery - photos)
October 4, 2003, Blackhawk FP, Kane County (Louise Augustine - photos, Kanae Hirabayashi - photos)
October 5, 2003, Blackhawk FP, Kane County (Myrna Deaton, Dan Kassebaum - photos)
October 6, 1985, Chicago, Cook County (Jim Landing) (IORC 1985.112; JEL, AA) (IBB 2:2:51) (IBB 4:3:59) (AB 40:120) (Bohlen 1989)
central Illinois
July 29 - August 6, 2006, Rice Lake, Fulton County (Kevin Richmond) (IBET) (pending IORC review)
July 29, 2006, Rice Lake, Fulton County (Kevin Richmond)
July 30, 2006, Rice Lake, Fulton County (Kevin Richmond)
August 1, 2006, Rice Lake, Fulton County (Kevin Richmond)
August 6, 2006, Rice Lake, Fulton County (Kevin Richmond)
August 12, 2006, Rice Lake, Fulton County (Kevin Richmond)
August 17, 2006, Rice Lake, Fulton County (Kevin Richmond)
August 26, 2001, Clinton Lake, DeWitt County (Michael Retter) (IBET) (pending IORC review)
August 26-31, 2004, Chautauqua NWR, Mason County (Kevin Richmond) (IBET) (pending IORC review)
August 30, 2003, Worley Lake, Peoria County (Kevin Richmond) (IBET) (pending IORC review)
September 23 - October 1, 2000, Chautauqua NWR, Mason County (Kevin Richmond) (IORC 2000.047; RTC) (MJIB 10:2:54) (MJIB 10:2:59)
September 25-26, 1990, Rice Lake, Fulton County (Kevin Richmond, Louise Augustine) (IORC 1990.015; LA, RDP, RTC, MJB) (IBB 7:2:50) (MJIB 7:2:56)
September 28-29, 1974, Chautauqua NWR, Mason County (David Bohlen, Richard Sandburg) (IORC 1974.005; HDB, RDS, CTC) (MJIB 7:2:56)
September 28, 1974, Chautauqua NWR, Mason County (David Bohlen) (IAB 172:4-5) (IAB 172:28) (AB 29:1:66) (Bohlen 1978) (Bohlen 1989)
September 29, 1974, Chautauqua NWR, Mason County (Charles Clark, Carolyn Howard, Larry Balch, eighteen observers) (Binford 1992) (MJIB 2:1:39)
October 5, 2003, Chautauqua NWR, Mason County (Kevin Richmond) (IBET) (pending IORC review)
October 29, 1994, Decatur, Macon County (Myrna Deaton)
southern Illinois
August 31 - September 3, 1982, Hartford, Madison County (Bill Rudden, Ron Goetz) (NN 54:8:69) (NN 54:9:78)
Fox River - Blackhawk FP, Kane County
October 5, 2003 photo - Dan Kassebaum