Here's my yard list for a suburban ranch house since 1992. 45 species. (30 March 1999)
Turkey Vulture (Cathartes aura) - flyover
Canada Goose (Branta canadensis) - flyover
Red-shouldered Hawk (Buteo lineatus)
Red-tailed Hawk (Buteo jamaicensis) - flyover
California Quail (Callipepla californica)
Mourning Dove (Zenaida macroura) - seed
Great Horned Owl (Bubo virginianus) - heard
Anna's Hummingbird (Calypte anna) - feeder, Grevillea
Allen's Hummingbird (Selasphorus sasin) - feeder, bathes in
birdbath, likes Grevillea
Red-breasted Sapsucker (Sphyrapicus ruber)
Nuttall's Woodpecker (Picoides nuttallii)
Hairy Woodpecker (Picoides villosus)
Northern Flicker (Colaptes auratus) - probes in dirt
Black Phoebe (Sayornis nigricans)
Steller's Jay (Cyanocitta stelleri) - seed
Western Scrub-Jay (Aphelocoma californica) - suet, seeds, corn
on the cob
American Crow (Corvus brachyrhynchos) - heard overhead
Chestnut-backed Chickadee (Poecile rufescens) - suet
Oak Titmouse (Baeolophus inornatus)
Bushtit (Psaltriparus minimus)
Bewick's Wren (Thryomanes bewickii)
Ruby-crowned Kinglet (Regulus calendula)
Western Bluebird (Sialia mexicana)
Hermit Thrush (Catharus guttatus)
American Robin (Turdus migratorius) - probes in lawn
Northern Mockingbird (Mimus polyglottos)
European Starling (Sturnus vulgaris)
Cedar Waxwing (Bombycilla cedrorum)
Orange-crowned Warbler (Vermivora celata)
Yellow-rumped Warbler (Dendroica coronata) - eat birch tree
seeds
Townsend's Warbler (Dendroica townsendi)
Western Tanager (Piranga ludoviciana) - heard
Spotted Towhee (Pipilo maculatus)
California Towhee (Pipilo crissalis) - seed
Fox Sparrow (Passerella iliaca)
White-crowned Sparrow (Zonotrichia leucophrys)
Golden-crowned Sparrow (Zonotrichia atricapilla) - seed, suet
Dark-eyed Junco (Junco hyemalis) - seed
Black-headed Grosbeak (Pheucticus melanocephalus)
House Finch (Carpodacus mexicanus) - seed
Pine Siskin (Carduelis pinus) - eat birch tree seeds
Lesser Goldfinch (Carduelis psaltria) - take seed from ripe
Cosmos
American Goldfinch (Carduelis tristis)
House Sparrow (Passer domesticus)