Here’s a few photos taken by Dave Feliz, our Reserve Manager.

Anise swallowtail butterflies use both poison hemlock and fennel as host plants – two very common species here at the Reserve.


A circle of shed leaves from a California Buckeye tree, the first tree to lose its leaves in late summer.

An oak moth caterpillar


Tricia updated us on the status of the caterpillar they were observing at the Reserve.

Remember the beautiful caterpillar?

Spotted Tussock Moth Caterpillar

Well, look at it now! It was still working inside the cocoon when this picture was taken!

Spotted Tussock Moth Cocoon

Kenton Parker, Education Director at the Elkhorn Slough National Estuarine Research Reserve found these caterpillars hanging out in some willows by the offices here at the Reserve this week.

Spotted Tussock Moth Caterpillar

South Marsh Loop: Common & Red-throated Loons; Pied-billed,Western & Clark’s Grebes; Double-crested Cormorants; Great Blue Heron; Great & Snowy Egrets; Buffleheads; Red-breasted Mergansers; Northern Pintails; Common Goldeneye; Canada Geese; Mallards; Northern Harrier; Turkey Vulture; White-tailed Kite; Red-shouldered & Red-tailed Hawk; California Quail; Killdeer; Willets; American Avocets; Lesser & Greater Yellowlegs; Long-billed Curlew; Marbled Godwit; Spotted Sandpiper; Sandpiper spp.; Dowitchers spp.; Ring-billed & Western Gulls; Mourning Dove; Barn Owl; Forster’s Tern; Band-tailed Pigeons; Anna’s & Rufous Hummingbirds; Belted Kingfisher; Acorn, Downy & Hairy Woodpeckers; Northern Flicker; Black & Say’s Phoebe; Steller’s & Western Scrub-Jay; Hutton’s Vireo; American Crow; Tree & Cliff Swallow; Chestnut-backed Chickadee; Oak Titmouse; European Starling; Bushtit; Pygmy Nuthatch; Bewick’s Wren; Ruby-crowned Kinglet; Cedar Waxwings; CA. Thrasher; Orange-crowned, Yellow, Townsend’s & Wilson’s Warblers; Common Yellowthroat; Spotted & CA. Towhee; Song Sparrow; Brewer’s & Red-winged Blackbirds; American Robin; Western Meadowlark; House Finch; Dark-eyed Junco; White & Golden-crowned Sparrow; American Goldfinch; Lesser Goldfinch

North Marsh Overlook: Greater Egrets; Canada Geese; American Wigeon; Blue-winged, Green-winged & Cinnamon Teals; Killdeer; Northern Shovelers; Northern Pintails; Black-necked Stilts; American Avocets; Greater Yellowlegs; Marbled Godwits; Dowitchers spp.; Black Phoebe; Western Scrub-Jay; Common Yellowthroat; Song Sparrow

Five Fingers/Long Valley: American White Pelican; Great & Snowy Egret; Mallards; Canada Geese; Northern Pintail; Greater Scaup; Buffleheads; Common Goldeneye; Red-breasted Mergansers; Turkey Vulture; White-tailed Kite; Red-tailed Hawk; Cooper’s Hawk; Willet; Long-billed Curlew; Marbled Godwit; Western Gulls; Sandpiper spp.; Mourning Dove; Acorn Woodpeckers; Northern Flicker; Anna’s Hummingbird; Say’s Phoebe; Western Scrub-Jay; American Crow; Tree Swallows; American Robin; Chestnut-backed Chickadee; Common Yellowthroat; Bushtits; Bewick’s Wren; Cedar Waxwings; California & Spotted Towhee; White-crowned, Golden-crowned & Song Sparrows; Brewer’s Blackbirds; American Goldfinch;  Dark-eyed Junco

Hudson’s Landing: Pied-billed Grebe; Western Grebe; Great Blue Heron; Great Egret; Canada Geese; American Wigeon; Mallards; Blue-winged, Green-winged, & Cinnamon Teals; Lesser Scaup; Buffleheads; Common Goldeneye; Ruddy Ducks; American Coots; Black-bellied Plovers; Black-necked Stilts; American Avocets; Greater Yellowlegs; Dowithcers sp.; Marbled Godwits; Willets

Visitor Center Area : Tree Swallows; Say’s Phoebe ; lots of Painted Ladies (butterflies)

Thanks again to our spotters: Annie McNeill; Katherine Klein, Shirley Murphy, Plant ladies and your  reporter Sheryl Gaebelein

These sightings are from 4/12/08 at the Elkhorn Ranch. The Elkhorn Ranch is a private property located on the north side of the main channel of the slough. For more information about this walk, visit

Gopher Snake

Pie-billed Grebe, Eared Grebe, Western Grebe, Clark’s Grebe, Double-crested Cormorant, Great Blue Heron, Great Egret, Snowy Egret, Green Heron, Turkey Vulture, Canada Goose, Gadwall, Mallard, Cinnamon Teal, Northern Shoveler, Green-winged Teal, Lesser Scaup, Red-tailed Hawk, American Coot, Black-bellied Plover, Killdeer, Black-necked Stilt, American Avocet, Greater Yellowlegs, Willet, Marbled Godwit, Western Sandpiper, Least Sandpiper, Dunlin, Short-billed Dowitcher, Long-billed Dowitcher, Western Gull, Forster’s Turn, Mourning Dove, Eurasian Collard Dove, Barn Owl, Anna’s Hummingbird, Black Phoebe, Western Strub-Jay, American Crow, Tree Swallow, Cliff Swallow, Barn Swallow, Chestnut-backed Chickadee, Oak Titmouse, Marsh Wren, European Starling, Orange-crowned Warbler, Yellow-rumped Warbler, California Towhee, Savannah Sparrow, Song Sparrow, Golden-crowned Sparrow, Red-winged Blackbird, Brown-headed Cowbird, House Finch, American Goldfinch.

Other species: Anise Swallowtail Butterfly, Gopher Snake (in photo).

Flora: Blue-eyed Grass, Suncup, California Poppy, Intermediate Fiddleneck, Creeping Rye, California Meadow Barley, and rare white Owl Clover.

These sightings were reported by Elkhorn Slough Foundation staff with help from Rick Fournier of Monterey Birding Adventures.