Some pictures from a recent (mostly non-birding) trip to San Diego. I saw in total 82 species, of which 25 were lifers.
Pictures were taken in the Mission Bay area unless otherwise noted.
Say's Phoebe. Lifer.

Eurasian Collared-Dove

Willet

Snowy Egret

American Crow

Eared Grebe

Painted Redstart. Lifer. Rare.

American Pipit

Common Raven on picnic table

Black Phoebe. Lifer. Likes perching on garbage bins.

Western Sandpiper. Lifer.

Dunlin

Marbled Godwit

Black-bellied Plover

American Coot. Most common waterfowl. On lawns and very unafraid of humans.

Brant

Cassin's Kingbird, Lifer.

Anna's Hummingbird. Lifer. Very common.

Western Gull. Lifer. Most common gull.

Western Grebe

California Gull. Lifer.

Long-billed Curlew. Lifer.

Heermann's Gull. Lifer.

Great Blue Heron

Brandt's Cormorant. Lifer.

Brown Pelican. Taken offshore on whale watching trip. Saw spouts and tail of Gray Whale, fins of Pacific White-sided Dolphin and great action from a large group of Common Dolphins.

Black-vented Shearwater. Offshore.

Acorn Woodpecker. Taken in the mountains east of San Diego.

Surf Scoter

Brewer's Blackbird. Lifer. Taken at San Diego Zoo parking lot.

Allen's Hummingbird. Lifer. San Diego Zoo.

Great Egret. San Diego Zoo.

Greater Yellowlegs. Taken at Silver Strands State Beach.

Little Blue Heron. Silver Strands State Beach.

Osprey, Silver Strands State Beach

Lifers I didn't get a picture of: Red-masked Parakeet, Steller's Jay, Western Meadowlark, Barn Owl, Verdin, Costa's Hummingbird, Great-tailed Grackle, Townsend's Warbler, California Towhee, Lesser Goldfinch