Grizzly Island Wildlife Area

California · Southwest

ChallengingView on eBird
Habitat
CoastalWetland
Best Seasons
FallWinterSpring
Difficulty

Challenging

Best Months

October-May

About This Location

Grizzly Island Wildlife Area is a productive birding destination in California, with 219 species recorded on eBird. This coastal and wetland habitat attracts Northern Shoveler, Gadwall, and American Wigeon 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

Brant

Branta bernicla

3/4/2026Grizzly Island Wildlife Refuge1 observed

Great-tailed Grackle

Quiscalus mexicanus

3/4/2026American Canyon Wetlands--west of Wetlands Edge Rd.1 observed

Northern Rough-winged Swallow

Stelgidopteryx serripennis

3/4/2026Suisun-Fairfield Station2 observed

Lesser Yellowlegs

Tringa flavipes

3/2/2026Jersey Island1 observed

Least Bittern

Botaurus exilis

3/1/2026Hill Slough Wildlife Area1 observed

Glaucous Gull

Larus hyperboreus

3/1/2026Area Surrounding the Hay Street Landfill 5065–5069 Rio Dixon Rd, Dixon US-CA (38.3006,-121.8236)1 observed

Caspian Tern

Hydroprogne caspia

3/1/2026Waterbird Regional Preserve/McNabney Marsh1 observed

Green-winged Teal (Eurasian)

Anas crecca

2/28/2026Pacheco Marsh--Pt. Edith Trail (TransMontaigne Pipeline Trail)1 observed

Barn Swallow

Hirundo rustica

2/28/2026Briones Regional Park--Old Briones Rd. entrance1 observed

Hudsonian Whimbrel

Numenius hudsonicus

2/28/2026American Canyon Wetlands1 observed

Townsend's Solitaire

Myadestes townsendi

2/27/2026Mt. Diablo SP--NE of Mt. Olympia1 observed

Northern Yellow Warbler

Setophaga aestiva

2/27/2026Kimberly Park1 observed

Black Skimmer

Rynchops niger

2/27/2026American Canyon Wetlands3 observed

Recent Observations

Species reported at this location in the last 14 days

Canada Goose

23/5/2026

Cinnamon Teal

33/5/2026

Northern Shoveler

3/5/2026

American Wigeon

3/5/2026

Mallard

3/5/2026

Green-winged Teal

3/5/2026

Anna's Hummingbird

13/5/2026

American Coot

3/5/2026

Black-necked Stilt

43/5/2026

Killdeer

13/5/2026

Wilson's Snipe

13/5/2026

Great Egret

43/5/2026

Turkey Vulture

23/5/2026

White-tailed Kite

13/5/2026

Northern Harrier

13/5/2026

Red-tailed Hawk

13/5/2026

Marsh Wren

3/5/2026

European Starling

13/5/2026

House Finch

63/5/2026

White-crowned Sparrow

13/5/2026

Birding Tips

  1. 1

    Check rocky shorelines and jetties at low tide for shorebirds.

  2. 2

    Scan offshore waters with a spotting scope for seabirds and waterfowl.

  3. 3

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

Frequently Asked Questions

When is the best time to visit Grizzly Island Wildlife Area for birding?
The best months to visit Grizzly Island Wildlife Area for birding are October-May. The best seasons are Fall and Winter and Spring.
What birds can I see at Grizzly Island Wildlife Area?
Notable species at Grizzly Island Wildlife Area include Northern Shoveler, Gadwall, American Wigeon, Mallard, Green-winged Teal. The area supports coastal, wetland habitats.
How difficult is birding at Grizzly Island Wildlife Area?
Birding at Grizzly Island Wildlife Area is rated as Challenging. The terrain can be challenging and may require good physical fitness and preparation.
What amenities are available at Grizzly Island Wildlife Area?
Grizzly Island Wildlife Area offers the following amenities: Parking, Trails.