Hummingbird Migration in Idaho: 2026 Timing
Arrivals ~April 20 · peak departure ~August 28 · feeders down ~October 5.
Season complete — next arrivals ~April 20The Idaho hummingbird season at a glance
Live · updates dailyFour breeding species share Idaho's canyons; the rufous exodus starts remarkably early — many are already southbound by the first week of July.
Hummingbird dates for your exact ZIP
The dates above are for Idaho as a whole. Enter a ZIP code for the arrival, departure and feeder dates at that location:
How the Idaho season unfolds
Arrival · April 20 males first
Adult males arrive ahead of females to claim territory. Have feeders out 1–2 weeks before April 20 — the earliest birds arrive depleted, and a ready feeder can anchor them to your yard for the season.
Nesting · May 8 onward quiet weeks
Feeder traffic often dips while females nest — they're eating small insects for protein and staying close to the nest. The birds haven't left; they're busy. Keep nectar fresh through the lull.
The rush · August 5–August 28 peak chaos
The best feeder weeks of the year: local families plus southbound migrants stack up together, all trying to double their body weight for the trip. A busy yard can drain a feeder daily. Adult males slip out first.
Last calls · through September 20 stragglers
Juveniles and late movers trickle through until September 20. Leave feeders up until October 5 — about two weeks past the typical last bird — as a refueling stop for stragglers.
Hummingbird species in Idaho
| Species | Status in Idaho |
|---|---|
| Calliope, Rufous & Black-chinned | breeding |
| Broad-tailed Hummingbird | breeding, southeast |
The West runs a relay of species rather than a single act — resident breeders hold territories while rufous and calliope migrants pour through on the Rocky Mountain corridor in late summer, briefly stacking three or four species at one feeder.
Feeding Idaho’s hummingbirds, done right
The only recipe
1 part white sugar : 4 parts water. Nothing else — no red dye, no honey (it ferments into toxins), no substitutes. Red on the feeder does the attracting.
Keep it clean
Change nectar every 2–3 days in warm weather and rinse with hot water each refill. Cloudy nectar or black mold can be lethal — when in doubt, dump it.
The calendar
Hang feeders around April 8 (about two weeks before first arrivals); take them down around October 5. Migration runs on day length, so a feeder never delays a bird.
Your Idaho feeder calendar
Every date below is computed from Idaho’s own arrival and departure anchors — no generic advice, these are your dates:
| Feeder task | Typical Idaho date | Why then |
|---|---|---|
| Hang feeders | April 8 | ~2 weeks before first arrivals (April 20) — early males arrive depleted |
| Expect the nesting lull | May 8 onward | Females switch to insects; traffic dips but the birds haven’t left |
| Add a second feeder | July 22 | ~2 weeks before departures begin — migrants stack on top of locals |
| Peak nectar demand | August 5 – August 28 | Birds double body weight for the trip; busy yards drain a feeder daily |
| Take feeders down | October 5 | ~2 weeks after the last stragglers (September 20) |
Plant a yard in Idaho they’ll fight over
Feeders are the appetizer; flowers and the small insects they attract are the meal. These western natives carry a yard through the August 5–September 20 migration crush:
- Penstemon (beardtongue)
- Salvia and autumn sage
- Scarlet gilia
- Agastache (hummingbird mint)
- Desert willow / ocotillo (Southwest)
Skip pesticides where you can — hummingbirds feed heavily on gnats, fruit flies, and spiders, especially females raising young.
Idaho hummingbird FAQ
The rest of your backyard season
More Rockies hummingbird timing
Windows compiled from Journey North citizen-science records, eBird seasonal abundance, and Audubon/USFWS range data; individual years shift ±1–2 weeks with weather. National picture: where the birds are right now →