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Idaho Birding Trail LogoMale Sage GrouseMountain Bluebird
Southwest Region

Three Island Crossing State Park

Nearest Town: Glenns Ferry
Site Size: 613 acres

Highlights: Raptors, Shorebirds, Songbirds, Upland Birds, Waterbirds, Waterfowl

Access: Year-round. Open sunrise - sunset. Access free of charge.

Site Location

Directions: From I-84 exit 120 or 121 to Glenns Ferry; follow large brown State Park signs for 2 mi S to the park.

Description: Three islands in Snake River here became one of the most famous spots on the Oregon Trail. Emigrants had to decide whether to cross the river or endure the longer, drier, more difficult trail on the south bank. Crossing the river here gave pioneers a shorter route, more potable water, and better feed for livestock.

More Information:
IDPR (208) 366-2394
Glenns Ferry Chamber of Commerce (208) 336-7345

Grasshopper Sparrow
Photo Copyright Tom Munson
Horned Grebe
Photo Copyright Keith Carlson
Violet-green Swallow
Photo Copyright Michael Woodruff

General Services:
ParkingRestroomsNo PhoneNo BoardwalkCampgroundPicnic AreaNo Observation AreaVisitor CenterNo Interpretive Material AvailableNo Boat RampNo ConcessionsHiking TrailsNo HuntingFishingWater SportsNo OHV/ATVs AllowedNo Horseback Riding

Handicapped Services:
ParkingNo RestroomsNo PhoneNo BoardwalkCampgroundPicnic AreaNo Observation AreaVisitor CenterNo Interpretive MaterialsNo Boat RampNo ConcessionsHiking Trails
What do these icons mean?

other Graph illustrating 20% 20%
riverine riparian Graph illustrating 20% 20%
sage/shrub Graph illustrating 60% 60%

Best Observation Times
Bird Species Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec AM/PM
Raptors Y Y Y Y Y Y Y Y Y Y Y Y ALL
Shorebirds N N Y Y Y Y Y Y Y Y N N ALL
Songbirds Y Y Y Y Y Y Y Y Y Y Y Y AM
Upland Birds Y Y Y Y Y Y Y Y Y Y Y Y ALL
Waterbirds Y Y Y Y Y Y Y Y Y Y Y Y ALL
Waterfowl Y Y Y Y Y Y Y Y Y Y Y Y ALL
Target Species for this Site

Select a species from the list to view other sites on the Idaho Birding Trail Sites this species may be observed.

    Geese, Swans and DucksGrebesHawks and EaglesShorebirdsSparrows and alliesSwallowsWood Warblers


    R - Resident 1 - Abundant, easily found s - Statewide
    M - Migrant 2 - Common, but sometimes difficult to find e - Southeast
    W - Winter 3 - Uncommon or local w - Southwest
    S - Summer 4 - Rare or very local c - Central
    5 - Casual, 3-10 accepted records p - Panhandle (North)
    6 - Accidental, 1-2 accepted records
    7 - Experimental
    (B) - Documented breeding evidence(End) - Threatened or Endangered
    (b) - Circumstantial breeding evidence(Int.) - Introduced species

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