When Do Hummingbirds Arrive in Illinois? (2026)
Hummingbirds typically arrive in Illinois in mid to late April, so put your feeder out by April 10. Numbers peak in late May and early September, the last birds are usually seen around early October, and you should take your feeder down in mid October.
Last updated: August 2026 · Typical windows for Illinois. Weather shifts arrival by a week or more in any given year.
Hummingbirds in Illinois: the year at a glance
What makes Illinois different
Illinois sits on a major inland flyway, and the autumn passage through the state runs later than many people expect — birds from Wisconsin and Michigan are still moving through in early October.
Hummingbird species in Illinois
- Ruby-throated Hummingbird
Ranges shift, and vagrants turn up well outside their expected territory — particularly in autumn and winter. If you see a hummingbird in Illinois outside the windows above, it is worth reporting to your state ornithological society.
Getting your Illinois feeder right
The recipe is the same everywhere: four parts water to one part plain white sugar. No red dye, no honey, no brown sugar. In Illinois's warm months you will need to change the nectar every two to three days, and daily once daytime highs pass 88°F — fermented nectar and black mould make hummingbirds ill.
Work out the exact amount for your feeder size with our hummingbird nectar calculator, and check the full state-by-state autumn schedule on the feeder takedown tool.
Ready for the Illinois season
Bee-resistant, drip-free and quick to clean — the shape experts recommend.
Check price on AmazonReaches the ports where mould starts in warm weather.
Check price on AmazonAs an Amazon Associate, Birdiy earns from qualifying purchases at no extra cost to you. Full disclosure.
Frequently asked questions about hummingbirds in Illinois
When do hummingbirds arrive in Illinois?
Typically in mid to late April. Put your feeder out by April 10 so early scouts find it — males arrive one to two weeks ahead of females.
When should I put feeders out in Illinois?
By April 10, about two weeks before the first birds are usually reported.
When do hummingbirds leave Illinois?
The last birds are typically seen around early October. You should take your feeder down in mid October — and always keep the feeder up for two weeks after your own final sighting.
What hummingbird species live in Illinois?
Ruby-throated Hummingbird.
Will leaving my feeder up stop them migrating?
No. Day length triggers migration, not food. A feeder left up in Illinois helps late migrants and cannot make a healthy bird stay.
More free bird tools
Nectar Calculator
The exact 4:1 recipe sized to your feeder.
Use tool → 🍂When to Take Feeders Down
Autumn takedown dates for all 50 states.
Use tool → 🔍Bird Identifier
Identify a mystery backyard bird in four questions.
Use tool →