How to Browse Rare Bird Records on Illinois Bird Records

Illinois Bird Records (illinoisbirdrecords.org) is a digital archive of rare bird sightings in Illinois, maintained around the work of the Illinois Ornithological Records Committee (IORC). You can browse accepted records dating back to 1857, search and filter them by species, year, or county, and open individual records to see the species, record number, observer, date, location, and any attached media. The site is free to browse and does not require an account to view records; you only need to submit documentation if you want your own sighting reviewed.

What the archive contains

The site describes itself as "a repository of data about birds in Illinois – past, present, and future." Its own summary figures give a sense of scale:

Records cover species on the Review List of Illinois Birds — rarities that require documentation before they are accepted into the state's official record.

Step 1: Go to the Browse Records entry point

From the homepage, the main path into the data is the View Records / Browse Records button, described as letting you "explore rare bird records that have been recorded in Illinois using an intuitive search and filter feature." A separate link, Explore records, opens the Illinois Ornithological Records Committee Database for reports, media, and voting decisions.

Step 2: Search and filter to narrow the list

Use the search and filter feature to locate records by the criteria that matter to you — for example, a species name, a year or date range, or a county. Filtering is the practical way to work through thousands of records: start broad (a species or a decade), then narrow by location or date until the result set is small enough to scan.

Step 3: Open a record and read its details

Each record carries a consistent set of fields. The homepage shows three examples:

• Black-throated Sparrow (1980-010) — photographed by David B. Johnson on 10 Jan. 1980 in Cook County
• Boreal Owl (1997-002) — photographed by Ginny Schmidt on 9 Feb. 2007 in Winnebago County
• Band-tailed Pigeon (1996-060) — photographed by Dennis Oehmke on 28 Dec. 1996 in Sangamon County

From these you can see the pattern: a species name, a record number in the form YYYY-NNN, the observer/photographer, the observation date, and the county. When you open a record, expect those same elements plus any attached media and, where applicable, the committee's decision.

Step 4: Use the IORC database for the full record trail

The Explore records link opens the IORC database, which the site describes as containing "reports, media, and voting decisions issued by the committee over the years." This is where you go when you want more than the sighting itself — the documentation submitted, the photos or other media, and how the committee voted on whether to accept it.

Step 5: Check the journal archives for context

Two publication archives are available alongside the records:

• Illinois Birds and Birding Journal — published by the Illinois Audubon Society and compiled by Vern Kleen, running January 1985 to December 1991 and covering the 1984 Summer to 1991 Spring seasons.
• The Meadowlark — the quarterly magazine of the Illinois Ornithological Society, spanning 1992 to 2026, covering the 1991 Summer to 2024–2025 Winter seasons, with field notes, seasonal highlights, technical papers, photos, drawings, and birding essays.

These are useful when you want the seasonal narrative around a record rather than the record alone.

If you want to report your own sighting

If you have seen a species from the Review List of Illinois Birds, the Report Your Sighting / Submit a Record for Review path lets you send documentation to the IORC for review. The About IORC page explains the committee: a volunteer group of regional experts founded in 1985, focused on documenting and maintaining details on rare bird occurrences in Illinois as far back as 1857.

Common snags

• Too many results. The archive spans more than a century; filter by species or county before scrolling.
• Record numbers look cryptic. The YYYY-NNN format encodes the year and a sequence number — read it as an identifier, not a date.
• A sighting isn't in the archive. Only reviewed and accepted records appear; a recent report may still be pending a committee decision.