When do ospreys arrive in Colorado?
The Osprey is a summer breeder in Colorado — here is when to expect it, when it leaves, and how to be ready.
Osprey timing in Colorado
- Arrives
- Around February
- Leaves
- By July
- Status here
- Summer breeder
- Nesting season
- March–June
- Present roughly
- February–July
In Colorado, ospreys are present through the warm months, arriving around February and heading south again by July.
These windows are set by latitude: Colorado sits in the middle part of this species' range, so timing here tracks the continental average closely. In any given year, weather can move the first arrivals by a week or two either way.
Month by month in this state
Highlighted months are when ospreys are expected in Colorado. The edges of the window are the interesting weeks — first arrivals and last departures vary most from year to year.
Getting ready before they arrive
The week before February is the time to act. Have feeders cleaned, filled and out by early February — the first ospreys into Colorado are scouting for reliable food, and a station that's ready early gets added to their route.
Once nesting begins around March, adults switch to protein-rich food for their young and visits to feeders become quick and purposeful. Expect the busiest activity at dawn.
What ospreys eat while they're here
- Fish of many kinds, 4–12 in long
Nests on poles, channel markers and purpose-built platforms; a platform near open water is often used.
Native plants that hold ospreys in Colorado
Food keeps a migrant for a day; habitat keeps it for the season. These Colorado-native plants are known to attract ospreys:
Late nectar for insects and fall seed for sparrows.
Insect-rich in fall and seed in winter.
Dark summer fruit and heavy caterpillar load.
Seeds and bark insects; pygmy nuthatch and woodpecker habitat.
Acorns for jays and woodpeckers across the southern Rockies.
Late-season bloom supports insects; seed for sparrows.
Seed for crossbills, siskins and chickadees.
Early catkins draw insects for arriving warblers and hummingbirds.
Keep exploring
Frequently asked
When do ospreys arrive in Colorado?
ospreys typically arrive in Colorado around February, with nesting underway by March. Timing can shift a week or two with the weather in any given year.
When do ospreys leave Colorado?
Most ospreys have left Colorado by July. They spend the winter farther south and return the following spring.
Do ospreys stay in Colorado all year?
No — in Colorado the Osprey is a summer breeder, present roughly February–July. Outside that window it is rarely seen in the state.
What should I put out before ospreys arrive in Colorado?
Have feeders up and clean by early February — first arrivals scout reliable food sources. Good offerings for this species: fish of many kinds, 4–12 in long.
Sources
- Osprey — All About Birds, Cornell Lab of Ornithology
- Osprey life history — Cornell Lab of Ornithology
- Osprey — Audubon Guide to North American Birds
- eBird region overview and bar charts — Colorado
- USDA Plant Hardiness Zone Map (2023)
- Audubon Native Plants Database
Timing reflects typical patterns for the region as a whole; local dates vary with elevation and year. Check the linked eBird bar charts for your county.