Timing derived from eBird data, 2016–2025 (sourced Aug 2026)

Michigan's hummingbird year runs on a tight schedule with a hard south-to-north lag built in: Detroit and Grand Rapids see real activity a full week or two before Traverse City and the Upper Peninsula catch up. But once the Upper Peninsula does catch up, it catches up fast — by late May, Marquette County actually shows a higher share of eBird checklists reporting Ruby-throated Hummingbird than either southern county we track. The whole season, statewide, runs roughly six months: nothing in winter, a hard climb through May, a broad summer plateau, a late-August peak, and a sharp September collapse. Here's how it actually unfolds, month by month.

The short answer: late April in southern Michigan, early May in the north and Upper Peninsula, reliably common statewide by mid-May, and essentially gone by early October.

New to feeding hummingbirds? Start with our guide to attracting hummingbirds in Michigan for species, feeders, nectar, and native plants. This page is the timing deep dive.

Michigan's Hummingbird Season at a Glance

Before the month-by-month detail below, here's the whole season in two pictures — Ruby-throated's full-season curve, and the winter visitors worth watching for, shown at their own scale since they're a small fraction of Ruby-throated's numbers.

How often each species turns up on eBird checklists, week by week — statewide, 2016–2025. Source: eBird bar chart data (Cornell Lab of Ornithology), 2016–2025 (pulled Aug 2026).

Regional Arrival and Departure Snapshot

Windows derived from eBird bar chart data (Cornell Lab of Ornithology), 2016–2025, for Wayne, Kent, Grand Traverse, and Marquette counties.

January: Quiet, With One Remarkable Exception

Michigan is completely quiet in January — Ruby-throated numbers sit at literal zero statewide and across every county we track. The only reason to think about hummingbirds this month at all is Michigan's most remarkable recent record: an Anna's Hummingbird was confirmed in Arcadia, Manistee County, in January 2025 — the kind of appearance that makes national birding news for a Pacific Coast specialist. If you spot any hummingbird in Michigan this month, photograph it and report it to the Michigan Bird Records Committee right away.

February: The Deep Quiet Continues

Still nothing — February is the one month where our data shows an absolute, unbroken zero across the entire state. There's no scouting, no stragglers, no regional exception. If you're the type to plan ahead, this is a fine month to give your feeders a thorough off-season cleaning so they're ready to go by March.

March: Getting Feeders Ready

March stays effectively silent — our data shows one isolated blip statewide that sits right at eBird's reporting floor, which reads as noise rather than a real early bird. Treat March as prep time rather than watch time: check your feeder for cracks or degraded seals over winter, stock up on sugar, and if you're planning to sow wildflower seed in spring as a backup to fall planting, late March is your window.

April: The First Real Scouts

April is when Michigan's season actually begins, though barely — real signal doesn't show up until the very end of the month. Statewide, the last week of April is the first time Ruby-throated shows any consistent presence at all, and it's still a light one. This is scout-bird territory: the earliest, most adventurous males pushing north ahead of the main wave. Pop's tip: put your feeder up by early-to-mid April so it's ready before these first arrivals, especially if you're in Detroit or Ann Arbor, where hummingbirds sometimes show up earlier than the broader pattern suggests. Watch for spring snow, too — a late-April cold snap isn't unusual in Michigan, and a feeder can be genuinely life-saving for an early arrival caught in one.

May: The Wave Arrives, and the North Catches Up Fast

May is Michigan's real arrival month, and it happens fast. Statewide checklist reports jump from about 4% in the first week to over 16% by the third week. The regional gradient is real at the start of the month — Wayne (Detroit) and Kent (Grand Rapids) are already climbing while Marquette (Upper Peninsula) barely shows a pulse (well under 1%) — but by the last week of May, Marquette has leapfrogged every southern county we track, reporting nearly 26% of checklists versus roughly 11–12% in Wayne and Kent. The Upper Peninsula starts late and catches up hard. By month's end, Ruby-throated is reliably common everywhere in the state.

June: Nesting Season Settles In

Ruby-throated activity levels off through June, holding in the 12–13% range statewide as birds settle into nesting. Females become secretive around the nest during this stretch, which can make feeder activity look quieter even though the birds haven't gone anywhere — they're simply spending more time incubating and less time visibly perched at a feeder. Males, by contrast, take no part in nest duties and remain visible and territorial.

July: Building Toward the Peak

Activity climbs steadily through July, from roughly 13% early in the month to nearly 16% by month's end, as the state's first broods fledge and juveniles join adults at feeders and flowers. This is typically the most crowded a Michigan feeder gets before the true statewide peak in late August.

August: The Statewide Peak

August is Michigan's busiest hummingbird month by a clear margin, climbing from about 18% of checklists early in the month to nearly 26% by the last week — the single highest point of the entire year. Birds are in hyperphagia, the intensive pre-migration feeding phase that can nearly double a hummingbird's body weight in fat reserves ahead of the trip south. This is also when Michigan's first scattered Rufous Hummingbird reports of the season begin to appear, though only in ones and twos this early.

September: The Fast Exit

September is when Michigan's hummingbirds leave, and they leave fast. Statewide, Ruby-throated reports fall from a peak of roughly 26% in the first week to under 7% by the last — more than a two-thirds drop in a single month. The decline isn't even across the state: Wayne and Kent still hold real numbers into late September (around 8% and 4%, respectively), while Grand Traverse and Marquette have already dropped to under 2% by then. The south genuinely lingers longer than the north before it, too, empties out.

October: Last Stragglers, First Real Rufous

By October, nearly every Ruby-throated has left — statewide reports fall from under 2% in the first week to essentially zero by month's end, with only isolated stragglers anywhere in the state. October is also when Rufous Hummingbird activity genuinely picks up, overtaking Ruby-throated as the more notable species to watch for by mid-month. Pop's tip: keep your feeder up for two to three weeks after your last Ruby-throated sighting to support any late-season stragglers, and consider leaving at least one feeder up into November if you'd like a shot at Rufous.

November: Peak Rufous-Watching

Ruby-throated is essentially absent statewide in November. This is instead the best month of the year to watch for Rufous Hummingbird, Michigan's most reliable rare visitor — the Michigan Bird Records Committee no longer even requires documentation for it because it shows up in small numbers most years. If a feeder-visiting hummingbird looks fiery orange-red rather than green-backed this month, there's a real chance it's a Rufous.

December: The Last of the Stragglers

December carries the tail end of Michigan's Rufous season, with scattered, low-level reports continuing through the month. It's also worth remembering what December can lead to: Michigan's most remarkable recent record, an Anna's Hummingbird confirmed in Arcadia (Manistee County) in January 2025, was found at a feeder that had simply been left up through the cold. If you keep a feeder up through a Michigan winter, that's genuinely the kind of patience that's paid off before.

The Year at a Glance

Frequently Asked Questions

When do hummingbirds come back to Michigan?

Late April in southern Michigan (Detroit, Grand Rapids), early May in the north and Upper Peninsula. Our data shows real, sustained arrivals don't begin until the very end of April even in the south — earlier feeder setup is a safety buffer, not a sign the birds are already here.

When do hummingbirds leave Michigan?

Most of the state empties out fast through September, with statewide reports dropping more than two-thirds between the first and last week of the month. Southern counties (Wayne, Kent) hold on a bit longer than northern ones (Grand Traverse, Marquette), but nearly all Ruby-throated Hummingbirds are gone by early October.

How long do hummingbirds stay in Michigan?

Roughly five months for the typical Michigan yard — arriving late April to early May and mostly gone by early October. Add the fall Rufous season, which runs October through December some years, and the practical "hummingbird watching" window stretches closer to eight months.

Why is my Upper Peninsula feeder still empty in late April?

Because the UP is genuinely the last part of the state to see activity. Our Marquette County data shows barely a trace through the third week of April, with real arrivals not landing until the first week of May — about a week to two weeks behind Detroit and Grand Rapids.

Should I keep a feeder up through a Michigan winter?

If you want a real shot at Rufous, yes — October through December is your best window, and it's a regular enough visitor that the state records committee no longer even tracks individual reports. Genuine winter rarities like Anna's are vanishingly unlikely in any given year, but Michigan has had at least one remarkable exception.

Why We Built This Calendar

Pop's Birding has been helping hummingbird lovers for three generations. One of the questions our customers ask most often is "When do hummingbirds arrive and leave my state?" — we built this calendar to give a direct, sourced answer, not a generic one. Most timing advice online gives a single date for an entire state, which is exactly wrong for a place the size of Michigan: Wayne and Kent counties get real arrivals a full week or two before Grand Traverse and Marquette do. A single statewide date would be genuinely misleading for roughly half the state. We wanted a calendar that tells you the truth for where you actually live, not an average that's wrong everywhere.

How We Built This Calendar

We pulled eBird bar chart data for Michigan statewide and for four counties — Wayne (Detroit, Ann Arbor), Kent (Grand Rapids), Grand Traverse (Traverse City), and Marquette (Upper Peninsula) — chosen for geographic spread across the state's two peninsulas, covering 2016 through 2025, and read the seasonal shape and regional pattern directly off the reporting rates ourselves.

Two definitions drive every number on this page: "first arrivals" is the first week a region's reporting rate clearly rises above its winter baseline and keeps climbing, and "reliably common" is the first week that region's reports hit 25% of that region's own seasonal peak — not a statewide peak. That distinction matters because a rural northern county and a metro southern county don't share a baseline; measuring both against one statewide average would flatten a real difference into a false one.

Before charting any low-frequency species, we checked its shape across the year: a bird reported steadily across many weeks reflects a genuine pattern, while an isolated spike sitting exactly at eBird's reporting floor is noise, not signal — that's why a few Rufous data points that looked like early-summer activity were excluded from the winter chart above. Because Michigan's breeding species so vastly outnumbers its winter visitors, we also split the data into two charts at different scales rather than one combined chart, so the winter birds don't get flattened into invisibility next to Ruby-throated's numbers. We didn't build a third, species-normalized timing chart on top of these two: that chart exists specifically to rescue a rare species being visually flattened on a shared-scale chart, and our two-chart split already solves that problem directly — Rufous, alone on its own axis in the winter chart, is already shown at its own true scale.

The genuine finding worth calling out: arrival timing and "reliably common" timing don't move together the way you'd expect. Despite a real one-to-two-week arrival gap between Wayne/Kent and Grand Traverse/Marquette, every region we measured converges on mid-May for reliably common presence — and by late May, Marquette actually shows a higher share of checklists than either southern county, having started from behind. That's not something a single statewide "arrives in spring" summary would ever surface. The county-level comparison, the region-own-peak threshold, and this arrival/convergence pattern are original analysis on our part, not a rewrite of eBird's own bar charts.

Sources

• eBird bar chart data, Cornell Lab of Ornithology — Michigan statewide and county-level (Wayne, Kent, Grand Traverse, Marquette), 2016–2025. Source for all month-by-month seasonal figures and the regional arrival/departure pattern.
• Michigan Bird Records Committee, Michigan Checklist. Source for official species status (regular, casual, accidental) for every hummingbird on Michigan's state list.

Event dates and formats change from year to year. Check organizer websites before making plans.

Want feeder setup, nectar ratios, and native plant picks for your part of the state? See our full guide to attracting hummingbirds in Michigan.