Bill Williams River National Wildlife Refuge - Headquarters and Delta

Arizona · Southwest

Habitat
River/RiparianWetland
Best Seasons
FallWinterSpring
Difficulty

Moderate

Best Months

October-May

About This Location

Bill Williams River National Wildlife Refuge - Headquarters and Delta is a productive birding destination in Arizona, with 233 species recorded on eBird. This river/riparian and wetland habitat attracts Mourning Dove, Costa's Hummingbird, and Verdin among many others. The unique desert and riparian habitats support specialty species alongside wintering and migrating birds.

Location

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Notable Species

Live Bird Data

Powered by eBird / Cornell Lab of Ornithology

Notable Sightings

Rare or unusual species spotted nearby in the last 14 days

Woodhouse's Scrub-Jay

Aphelocoma woodhouseii

3/4/2026Bill Williams River NWR--Riparian past gate (La Paz)1 observed

Lucy's Warbler

Leiothlypis luciae

3/4/2026Bill Williams River NWR--Riparian past gate (La Paz)1 observed

Recent Observations

Species reported at this location in the last 14 days

Mourning Dove

23/4/2026

Costa's Hummingbird

13/4/2026

Verdin

13/4/2026

Tree Swallow

23/4/2026

House Finch

43/4/2026

Great-tailed Grackle

33/4/2026

Gadwall

33/3/2026

Canvasback

53/3/2026

Ring-necked Duck

33/3/2026

Common Goldeneye

123/3/2026

Ruddy Duck

23/3/2026

Anna's Hummingbird

13/3/2026

American Coot

103/3/2026

Ring-billed Gull

13/3/2026

Pied-billed Grebe

23/3/2026

Western Grebe

53/3/2026

Clark's Grebe

63/3/2026

Double-crested Cormorant

73/3/2026

Turkey Vulture

23/3/2026

Osprey

13/3/2026

Birding Tips

  1. 1

    Walk along the water slowly, scanning overhanging branches for kingfishers and warblers.

  2. 2

    Check sandbars and gravel bars for shorebirds and terns.

  3. 3

    Carry extra water and sun protection; mornings are the prime birding window.

Frequently Asked Questions

When is the best time to visit Bill Williams River National Wildlife Refuge - Headquarters and Delta for birding?
The best months to visit Bill Williams River National Wildlife Refuge - Headquarters and Delta for birding are October-May. The best seasons are Fall and Winter and Spring.
What birds can I see at Bill Williams River National Wildlife Refuge - Headquarters and Delta?
Notable species at Bill Williams River National Wildlife Refuge - Headquarters and Delta include Mourning Dove, Costa's Hummingbird, Verdin, Tree Swallow, House Finch. The area supports river/riparian, wetland habitats.
How difficult is birding at Bill Williams River National Wildlife Refuge - Headquarters and Delta?
Birding at Bill Williams River National Wildlife Refuge - Headquarters and Delta is rated as Moderate. Some trails may require moderate fitness and basic hiking ability.
What amenities are available at Bill Williams River National Wildlife Refuge - Headquarters and Delta?
Bill Williams River National Wildlife Refuge - Headquarters and Delta offers the following amenities: Parking, Restrooms, Trails, Auto Tour Route.