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Sunrise at Mono Lake. Photo by guide Chris Benesh.
This year’s Slice of California tour was a treat to lead. There were some rather varied bird highlights, with Yellow-billed Magpie, California Thrasher, Blue-footed Booby, and the massive number of Vaux’s Swifts leading the pack of trip favorites. It was also a milestone trip for Jen who scored her 600th ABA classic bird with the California Towhee on the first day of the trip! Other bird highlights included huge numbers of Sooty Shearwaters, several Tufted Puffins, Wandering Tattler, Prairie Falcon, Clark’s Nutcracker, Red-breasted Sapsucker, White-headed Woodpecker, American Dipper, and the unique Wrentit.
Whales put on a good show with lots of food near the coast. It was impressive seeing a massive Blue Whale on the boat trip, a breaching Minke Whale (for those lucky enough to see it), and most impressively, the feeding frenzy of Humpback Whales near Pigeon Point. What a treat! There were some impressive trees too, with giant sequoias in the Sierra and coast redwoods in Marin County.
But perhaps most amazing of all was the spectacle of 30,000 Vaux’s Swifts coming to roost on our last evening in San Rafael. Wow! Thanks to all of you for coming out and making the trip such a treat to lead. I always love getting back to my native California and sharing with others its diversity of habitats and wildlife. I look forward to seeing you again in the future — Chris
KEYS FOR THIS LIST
One of the following keys may be shown in brackets for individual species as appropriate: * = heard only, I = introduced, E = endemic, N = nesting, a = austral migrant, b = boreal migrant

The enigmatic Mountain Quail. Photo by guide Chris Benesh.
Anatidae (Ducks, Geese, and Waterfowl)
CANADA GOOSE (Branta canadensis)
GADWALL (Anas strepera)
MALLARD (Anas platyrhynchos)
NORTHERN SHOVELER (Anas clypeata)
NORTHERN PINTAIL (Anas acuta)
GREEN-WINGED TEAL (AMERICAN) (Anas crecca carolinensis)

A California endemic, the Yellow-billed Magpie, flies past us on Mines Road. Photo by guide Chris Benesh.
HARLEQUIN DUCK (Histrionicus histrionicus)
SURF SCOTER (Melanitta perspicillata)
RED-BREASTED MERGANSER (Mergus serrator)
RUDDY DUCK (Oxyura jamaicensis)
Odontophoridae (New World Quail)
MOUNTAIN QUAIL (Oreortyx pictus)
CALIFORNIA QUAIL (Callipepla californica)
Phasianidae (Pheasants, Grouse, and Allies)
GREATER SAGE-GROUSE (Centrocercus urophasianus)

A tiny fraction of the thirty thousand Vaux's Swifts entering a roost chimney in San Rafael. Photo by guide Chris Benesh.
WILD TURKEY (Meleagris gallopavo)
Gaviidae (Loons)
PACIFIC LOON (Gavia pacifica)
COMMON LOON (Gavia immer)
Podicipedidae (Grebes)
PIED-BILLED GREBE (Podilymbus podiceps)
EARED GREBE (Podiceps nigricollis)
WESTERN GREBE (Aechmophorus occidentalis)
Diomedeidae (Albatrosses)
BLACK-FOOTED ALBATROSS (Phoebastria nigripes)

We were fortunate to see several wonderful Greater Sage-Grouse in Bodie. Photo by guide Chris Benesh.
Procellariidae (Shearwaters and Petrels)
NORTHERN FULMAR (Fulmarus glacialis)
PINK-FOOTED SHEARWATER (Ardenna creatopus)
SOOTY SHEARWATER (Ardenna grisea)
Hydrobatidae (Storm-Petrels)
ASHY STORM-PETREL (Oceanodroma homochroa)
Sulidae (Boobies and Gannets)
BLUE-FOOTED BOOBY (Sula nebouxii)
BROWN BOOBY (BREWSTER'S) (Sula leucogaster brewsteri)
Phalacrocoracidae (Cormorants and Shags)
BRANDT'S CORMORANT (Phalacrocorax penicillatus)

Quite a sight in North America, two species of booby hanging out together at the Southeast Farallon Islands. Photo by participant David Baker.
PELAGIC CORMORANT (Phalacrocorax pelagicus)
DOUBLE-CRESTED CORMORANT (Phalacrocorax auritus)
Pelecanidae (Pelicans)
AMERICAN WHITE PELICAN (Pelecanus erythrorhynchos)
BROWN PELICAN (Pelecanus occidentalis)
Ardeidae (Herons, Egrets, and Bitterns)
GREAT BLUE HERON (Ardea herodias)
GREAT EGRET (Ardea alba)
SNOWY EGRET (Egretta thula)

There is no more iconic chaparral bird than Wrentit. Photo by guide Chris Benesh.
BLACK-CROWNED NIGHT-HERON (Nycticorax nycticorax)
Threskiornithidae (Ibises and Spoonbills)
WHITE-FACED IBIS (Plegadis chihi)
Cathartidae (New World Vultures)
TURKEY VULTURE (Cathartes aura)
Pandionidae (Osprey)
OSPREY (Pandion haliaetus)
Accipitridae (Hawks, Eagles, and Kites)
WHITE-TAILED KITE (Elanus leucurus)
GOLDEN EAGLE (Aquila chrysaetos)

Bell's Sparrow, of the nominate subspecies, is quite a striking bird. Photo by guide Chris Benesh.
NORTHERN HARRIER (Circus cyaneus)
SHARP-SHINNED HAWK (Accipiter striatus)
COOPER'S HAWK (Accipiter cooperii)
BALD EAGLE (Haliaeetus leucocephalus)
RED-SHOULDERED HAWK (ELEGANS) (Buteo lineatus elegans)
RED-TAILED HAWK (Buteo jamaicensis)
Rallidae (Rails, Gallinules, and Coots)
RIDGWAY'S RAIL (SAN FRANCISCO BAY) (Rallus obsoletus obsoletus)

A Sooty Shearwater takes flight as our boat approaches, one of the many thousands seen on the boat trip. Photo by guide Chris Benesh.
VIRGINIA RAIL (Rallus limicola) [*]
AMERICAN COOT (Fulica americana)
Recurvirostridae (Stilts and Avocets)
BLACK-NECKED STILT (Himantopus mexicanus)
AMERICAN AVOCET (Recurvirostra americana)
Haematopodidae (Oystercatchers)
BLACK OYSTERCATCHER (Haematopus bachmani)
Charadriidae (Plovers and Lapwings)
BLACK-BELLIED PLOVER (Pluvialis squatarola)
SEMIPALMATED PLOVER (Charadrius semipalmatus)

A Black-footed Albatross moves past the boat. Photo by guide Chris Benesh.
KILLDEER (Charadrius vociferus)
Scolopacidae (Sandpipers and Allies)
WHIMBREL (HUDSONIAN) (Numenius phaeopus hudsonicus)
LONG-BILLED CURLEW (Numenius americanus)
MARBLED GODWIT (Limosa fedoa)
RUDDY TURNSTONE (Arenaria interpres)
BLACK TURNSTONE (Arenaria melanocephala)

This Pigeon Guillemot was lingering around in Princeton Harbor. Photo by guide Chris Benesh.
SURFBIRD (Calidris virgata)
LEAST SANDPIPER (Calidris minutilla)
WESTERN SANDPIPER (Calidris mauri)
SHORT-BILLED DOWITCHER (Limnodromus griseus)
LONG-BILLED DOWITCHER (Limnodromus scolopaceus)
WILSON'S SNIPE (Gallinago delicata)
RED-NECKED PHALAROPE (Phalaropus lobatus)

An Elegant Tern flies past our boat near Half Moon Bay. Photo by guide Chris Benesh.
RED PHALAROPE (Phalaropus fulicarius)
SPOTTED SANDPIPER (Actitis macularius)
WANDERING TATTLER (Tringa incana)
GREATER YELLOWLEGS (Tringa melanoleuca)
WILLET (WESTERN) (Tringa semipalmata inornata)
LESSER YELLOWLEGS (Tringa flavipes)

This Pacific Wren belts out its song at Calaveras Big Trees. Photo by participant David Baker.
Stercorariidae (Skuas and Jaegers)
POMARINE JAEGER (Stercorarius pomarinus)
PARASITIC JAEGER (Stercorarius parasiticus)
LONG-TAILED JAEGER (Stercorarius longicaudus)
Alcidae (Auks, Murres, and Puffins)
COMMON MURRE (Uria aalge)
PIGEON GUILLEMOT (Cepphus columba)
CASSIN'S AUKLET (Ptychoramphus aleuticus)

One of the treats of the trip was this cooperative California Thrasher along Mines Road. Photo by participant David Baker.
RHINOCEROS AUKLET (Cerorhinca monocerata)
TUFTED PUFFIN (Fratercula cirrhata)
Laridae (Gulls, Terns, and Skimmers)
SABINE'S GULL (Xema sabini)
HEERMANN'S GULL (Larus heermanni)
RING-BILLED GULL (Larus delawarensis)
WESTERN GULL (Larus occidentalis)
CALIFORNIA GULL (Larus californicus)

A Peregrine Falcon terrorizing a flock of shorebirds on San Francisco Bay. Photo by guide Chris Benesh.
CASPIAN TERN (Hydroprogne caspia)
FORSTER'S TERN (Sterna forsteri)
ELEGANT TERN (Thalasseus elegans)
BLACK SKIMMER (Rynchops niger)
Columbidae (Pigeons and Doves)
ROCK PIGEON (Columba livia) [I]
BAND-TAILED PIGEON (Patagioenas fasciata)
EURASIAN COLLARED-DOVE (Streptopelia decaocto) [I]

Nice morning light on a Sage Thrasher at Mono Lake. Photo by guide Chris Benesh.
MOURNING DOVE (Zenaida macroura)
Strigidae (Owls)
BURROWING OWL (Athene cunicularia)
Apodidae (Swifts)
VAUX'S SWIFT (Chaetura vauxi)
Trochilidae (Hummingbirds)
ANNA'S HUMMINGBIRD (Calypte anna)
RUFOUS HUMMINGBIRD (Selasphorus rufus)
Alcedinidae (Kingfishers)
BELTED KINGFISHER (Megaceryle alcyon)
Picidae (Woodpeckers)
LEWIS'S WOODPECKER (Melanerpes lewis)

A couple of male Yellow-headed Blackbirds perching on tufa at Mono Lake. Photo by guide Chris Benesh.
ACORN WOODPECKER (Melanerpes formicivorus)
RED-BREASTED SAPSUCKER (Sphyrapicus ruber)
NUTTALL'S WOODPECKER (Picoides nuttallii)
DOWNY WOODPECKER (Picoides pubescens)
HAIRY WOODPECKER (Picoides villosus)
WHITE-HEADED WOODPECKER (Picoides albolarvatus)

One of the many Mountain Chickadees encountered in the Sierra. Photo by guide Chris Benesh.
BLACK-BACKED WOODPECKER (Picoides arcticus)
NORTHERN FLICKER (Colaptes auratus)
PILEATED WOODPECKER (Dryocopus pileatus)
Falconidae (Falcons and Caracaras)
AMERICAN KESTREL (Falco sparverius)
PEREGRINE FALCON (Falco peregrinus)
PRAIRIE FALCON (Falco mexicanus)
Tyrannidae (Tyrant Flycatchers)
OLIVE-SIDED FLYCATCHER (Contopus cooperi)

It was a good year for Phainopepla along Mines Road. Photo by guide Chris Benesh.
BLACK PHOEBE (Sayornis nigricans)
SAY'S PHOEBE (Sayornis saya)
Laniidae (Shrikes)
LOGGERHEAD SHRIKE (Lanius ludovicianus) [*]
Vireonidae (Vireos, Shrike-Babblers, and Erpornis)
HUTTON'S VIREO (Vireo huttoni)
CASSIN'S VIREO (Vireo cassinii)
WARBLING VIREO (Vireo gilvus)
Corvidae (Crows, Jays, and Magpies)
PINYON JAY (Gymnorhinus cyanocephalus)

One of our most desired birds was this White-headed Woodpecker, which we saw well on a few occasions in the Sierra. Photo by guide Chris Benesh.
STELLER'S JAY (Cyanocitta stelleri)
CALIFORNIA SCRUB-JAY (Aphelocoma californica)
BLACK-BILLED MAGPIE (Pica hudsonia)
YELLOW-BILLED MAGPIE (Pica nuttalli) [E]
CLARK'S NUTCRACKER (Nucifraga columbiana)
AMERICAN CROW (Corvus brachyrhynchos)
COMMON RAVEN (Corvus corax)

One of the Black Turnstones seen at Princeton Harbor. Photo by guide Chris Benesh.
Hirundinidae (Swallows)
NORTHERN ROUGH-WINGED SWALLOW (Stelgidopteryx serripennis)
VIOLET-GREEN SWALLOW (Tachycineta thalassina)
BARN SWALLOW (Hirundo rustica)
Paridae (Tits, Chickadees, and Titmice)
MOUNTAIN CHICKADEE (Poecile gambeli)
CHESTNUT-BACKED CHICKADEE (Poecile rufescens)
OAK TITMOUSE (Baeolophus inornatus)
Aegithalidae (Long-tailed Tits)
BUSHTIT (Psaltriparus minimus)

This Northern Harrier made a close pass. Photo by guide Chris Benesh.
Sittidae (Nuthatches)
RED-BREASTED NUTHATCH (Sitta canadensis)
WHITE-BREASTED NUTHATCH (INTERIOR WEST) (Sitta carolinensis tenuissima)
WHITE-BREASTED NUTHATCH (PACIFIC) (Sitta carolinensis aculeata)
PYGMY NUTHATCH (Sitta pygmaea)
Certhiidae (Treecreepers)
BROWN CREEPER (Certhia americana)
Troglodytidae (Wrens)
ROCK WREN (Salpinctes obsoletus)

We had this female western Purple Finch along Mines Road, with its empid like whit call. Photo by guide Chris Benesh.
HOUSE WREN (Troglodytes aedon)
PACIFIC WREN (PACIFICUS GROUP) (Troglodytes pacificus pacificus)
MARSH WREN (PALUDICOLA GROUP) (Cistothorus palustris paludicola) [*]
BEWICK'S WREN (Thryomanes bewickii)
Cinclidae (Dippers)
AMERICAN DIPPER (Cinclus mexicanus)
Regulidae (Kinglets)
GOLDEN-CROWNED KINGLET (Regulus satrapa)

A Black Skimmer seen near Foster City. This species is a recent colonist to San Francisco Bay. Photo by guide Chris Benesh.
Paradoxornithidae (Parrotbills, Wrentit, and Allies)
WRENTIT (Chamaea fasciata)
Turdidae (Thrushes and Allies)
WESTERN BLUEBIRD (Sialia mexicana)
MOUNTAIN BLUEBIRD (Sialia currucoides)
TOWNSEND'S SOLITAIRE (Myadestes townsendi)
AMERICAN ROBIN (Turdus migratorius)
Mimidae (Mockingbirds and Thrashers)
CALIFORNIA THRASHER (Toxostoma redivivum)
SAGE THRASHER (Oreoscoptes montanus)

David Baker's great capture of a breaching Humpback Whale!
NORTHERN MOCKINGBIRD (Mimus polyglottos)
Sturnidae (Starlings)
EUROPEAN STARLING (Sturnus vulgaris) [I]
Ptiliogonatidae (Silky-flycatchers)
PHAINOPEPLA (Phainopepla nitens)
Parulidae (New World Warblers)
ORANGE-CROWNED WARBLER (Oreothlypis celata)
NASHVILLE WARBLER (RIDGWAYI) (Oreothlypis ruficapilla ridgwayi)
MACGILLIVRAY'S WARBLER (Geothlypis tolmiei)

The steely blue back of a massive Blue Whale seen on the pelagic trip. Photo by guide Chris Benesh.
COMMON YELLOWTHROAT (Geothlypis trichas)
YELLOW WARBLER (Setophaga petechia)
YELLOW-RUMPED WARBLER (AUDUBON'S) (Setophaga coronata auduboni)
BLACK-THROATED GRAY WARBLER (Setophaga nigrescens)
TOWNSEND'S WARBLER (Setophaga townsendi)
HERMIT WARBLER (Setophaga occidentalis)
WILSON'S WARBLER (Cardellina pusilla)

Douglas's Squirrel, sometimes lumped with Red Squirrel and called Pine Squirrel, was a frequent sight in the Sierra. Photo by guide Chris Benesh.
Emberizidae (Buntings and New World Sparrows)
CHIPPING SPARROW (Spizella passerina)
BREWER'S SPARROW (Spizella breweri)
LARK SPARROW (Chondestes grammacus)
FOX SPARROW (THICK-BILLED) (Passerella iliaca megarhyncha)
DARK-EYED JUNCO (Junco hyemalis)
WHITE-CROWNED SPARROW (ORIANTHA) (Zonotrichia leucophrys oriantha)

A pensive Golden-mantled Ground-Squirrel, another one of the various squirrel fauna on the tour. Photo by guide Chris Benesh.
WHITE-CROWNED SPARROW (NUTTALLI) (Zonotrichia leucophrys nuttalli)
BELL'S SPARROW (BELLI) (Artemisiospiza belli belli)
SAVANNAH SPARROW (Passerculus sandwichensis)
SONG SPARROW (Melospiza melodia)
CALIFORNIA TOWHEE (Melozone crissalis)
GREEN-TAILED TOWHEE (Pipilo chlorurus)

A Western Fence Lizard hanging out along Mines Road. Photo by guide Chris Benesh.
SPOTTED TOWHEE (Pipilo maculatus)
Cardinalidae (Cardinals and Allies)
WESTERN TANAGER (Piranga ludoviciana)
LAZULI BUNTING (Passerina amoena)
Icteridae (Troupials and Allies)
RED-WINGED BLACKBIRD (Agelaius phoeniceus)
TRICOLORED BLACKBIRD (Agelaius tricolor)
WESTERN MEADOWLARK (Sturnella neglecta)
YELLOW-HEADED BLACKBIRD (Xanthocephalus xanthocephalus)

One of the vintage structures in the ghost town of Bodie. Photo by guide Chris Benesh.
BREWER'S BLACKBIRD (Euphagus cyanocephalus)
BROWN-HEADED COWBIRD (Molothrus ater)
Fringillidae (Finches, Euphonias, and Allies)
HOUSE FINCH (Haemorhous mexicanus)
PURPLE FINCH (WESTERN) (Haemorhous purpureus californicus)
CASSIN'S FINCH (Haemorhous cassinii)
RED CROSSBILL (Loxia curvirostra)
PINE SISKIN (Spinus pinus)

A picnic lunch along Del Puerto Canyon road. Photo by David Baker.
LESSER GOLDFINCH (Spinus psaltria)
LAWRENCE'S GOLDFINCH (Spinus lawrencei)
AMERICAN GOLDFINCH (Spinus tristis) [*]
Passeridae (Old World Sparrows)
HOUSE SPARROW (Passer domesticus) [I]
BRUSH RABBIT (Sylvilagus bachmani)
BLACK-TAILED JACKRABBIT (Lepus californicus)
LEAST CHIPMUNK (Tamias minimus)

The moon showing well, with the bright star Aldebaran nearby. Photo by guide Chris Benesh.
LONG-EARED CHIPMUNK (Tamias quadrimaculatus)
LODGEPOLE CHIPMUNK (Tamias speciosus)
CALIFORNIA GROUND SQUIRREL (Spermophilus beecheyi)
GOLDEN-MANTLED GROUND SQUIRREL (Spermophilus lateralis)
EASTERN GRAY SQUIRREL (Sciurus carolinensis) [I]
FOX SQUIRREL (Sciurus niger) [I]
CHICKAREE (Tamiasciurus douglasii)
BOTTLENOSE DOLPHIN (Tursiops truncatus)

Stormy skies over Mono Lake one evening. Photo by guide Chris Benesh.
COMMON MINKE WHALE (Balaenoptera acutorostrata)
BLUE WHALE (Balaenoptera musculus)
HUMPBACK WHALE (Megaptera novaeangliae)
COYOTE (Canis latrans)
LONG-TAILED WEASEL (Mustela frenata)
CALIFORNIA SEA LION (Zalophus californianus)
STELLER'S SEA LION (Eumetopias jubatus)
NORTHERN FUR SEAL (Callorhinus ursinus)
HARBOR SEAL (Phoca vitulina)
MULE DEER (Odocoileus hemionus)
Totals for the tour: 196 bird taxa and 21 mammal taxa