IORC Update, 15 August 2025
The Illinois Ornithological Records Committee (IORC) recently concluded evaluations of 21 records of the occurrence of rare birds in Illinois. IORC accepted 13 of these records and did not accept eight.
The records involved are summarized below. For each record, we indicate the species or form, with number of individuals in parentheses if greater than one, followed by date or date range, location, and county. The record number is indicated in parentheses, followed by, for accepted records, names of the documenters. If multiple documenters are listed, those understood by IORC to have been the original finders of the bird(s) are listed first and separated from the others by a semicolon. IORC thanks all the documenters, for accepted and unaccepted records alike, for their submissions. All documentation is maintained in the IORC archives so that there is a permanent record of all these observations. Documentation, regardless of the Committee’s decision, is a valuable part of the record of bird life in Illinois.
Records Accepted
- Black-bellied Whistling-Duck (8), 13 July 2020, Hampshire, Kane County (2020-187; Ryan Oddo).
- Whimbrel (37), 25 May 2025, South Unit of Illinois Beach State Park, Lake County (2025-017; Brendan Rattin).
- Tricolored Heron, 27 to 29 April 2025, Trumpet Road Marsh, Lake County (2025-006; John Sikora).
- Cassin’s Kingbird, 23 May 2025, North Unit of Illinois Beach State Park and nearby Hosah Park, Zion, Lake County (2025-016; Eric Johnson; John Ter Louw).
- Fork-tailed Flycatcher, 26 to 28 April 2025, Horseshoe Lake State Park, Madison County (2025-005; Julie Bryson).
- Say’s Phoebe, 12 April 2025, western Jackson County (2025-009; David Goodward).
- Vermilion Flycatcher, 18 May 2025, Sag Quarries, Cook County (2025-014; Lili Duan).
- Mountain Bluebird, 20 to 24 April 2025, Chicago, Cook County (2025-004; Christopher Holden; Scott Judd, Yonatan Simkovich, Peter Tolzmann, Geoffrey A. Williamson).
- Spotted Towhee, 10 December 2024 to 27 April 2025, Anna, Union County (2024-074; Mark Vukovich).
- Swainson’s Warbler, 25 to 26 April 2024, Cypress Creek National Wildlife Refuge (Hickory Bottoms), Union County (2024-075; Keith McMullen, Mark Seiffert).
- Kirtland’s Warbler, 15 to 17 May 2025, Polk Bros Park portion of Navy Pier, Chicago, Cook County (2025-012; Woody Goss; Geoffrey A. Williamson).
- Western Tanager, 10 to 11 March 2025, Valmeyer, Monroe County (2025-003; Donna Vogt; Mike Avara).
- Painted Bunting (2), 29 April 2025, Grayville, White County (2025-015; Steve Hartsock).
Records Not Accepted
- Long-billed Curlew (2), late spring/early summer 2024, near IL-173 and I-94, northern Lake County (2024-076).
- Common Redshank, 26 April 2025, Van Patten Woods, Lake County (2025-008).
- Great Gray Owl, 18 April 2023, Hampshire Forest Preserve, Kane County (2023-125).
- Ivory-billed Woodpecker, 10 April 2025, Rockford, Winnebago County (2025-010).
- Prairie Falcon, 29 July 2023, McHenry Prairie Trail southwest of McHenry, McHenry County (2023-124).
- Violet-green Swallow, 29 April 2025, Algonquin, McHenry County (2025-011).
- Cave Swallow, 22 November 2024, Illinois Beach State Park, North Unit, Lake County (2024-065).
- MacGillivray’s Warbler, 29 May 2024, Montrose Point in Chicago’s Lincoln Park, Cook County (2024-077).

