Observations by kb550d

A rather ragged-looking Lesser Goldfinch (Spinus psaltria) clings to a branch at Crissy Marsh, Presidio National Park.

Red-eared Slider digging on the shore of Stow Lake.

A Caspian Tern (Hydroprogne caspia) cruising Crissy Marsh with the Golden Gate Bridge as a backdrop.

Tree Swallow (Tachycineta bicolor) laying claim to a nest box at the bison paddock in Golden Gate Park.

Brown Pelicans flying over the bay in iconic squadron formation.

Brown Pelican spies a meal in the bay...
...and plunges in to catch it.

Brown Pelican flying close overhead.

Brown Pelicans winging past a sailboat on the bay.

Herring Gulls (Larus argentatus) in a tete a tete at Stow Lake. Looked like courting behavior.

The male Hooded Merganser (Lophodytes cucullatus) who's been hanging out at Stow Lake, his white hood beginning to appear.

Great Blue Heron (Ardea Herodias) displaying at her nest while three nestlings look on; Stow Lake. See additional views of the heron, nest, chicks.

Black-crowned Night Heron (Nycticorax nycticorax) listening intently on the shore of Crissy Marsh.

Eared Grebes (Podiceps nigricollis) in breeding plumage at Crissy Marsh in the Presidio.

Great Blue Heron (Ardea herodias) listening to gophers moving underground, then it caught one! I watched it catch two, in fact.

White-crowned Sparrow (Zonotrichia leucophrys), Stow Lake, Golden Gate Park.

American Wigeon couple (Anas Americana), Stow Lake, Golden Gate Park. Male on the right, female on the left.

Song Sparrow (Melospiza melodia) seen through a screen of branches at North Lake in Golden Gate Park, San Francisco

A disgruntled-looking Hooded Merganser (Lophodytes cucullatus), molting out of his juvenile plumage, Stow Lake, Golden Gate Park.

A Great Blue Heron (Ardea Herodias) lifts off from the shore of Stow Lake, Golden Gate Park.

This aggressive goose was chasing and biting at others in the flock, then he took to the water after another goose, tongue out.

The wings of the Great Blue are so elegant as it glides across Stow Lake.

Something made me look up in time to see this Great Blue Heron flying a branch to his nest at Stow Lake.

A nondescript brown shorebird on the ground, the Willet in flight shows wonderful black and white stripes on its wings.

Yellow-rumped Warbler, Audubon's by the yellow throat, seen in the Botanical Garden's succulent patch.

This young Greater White-fronted Goose was with a flock of Canada Geese, grazing near the Waterfowl Pond in the Botanical Garden.

A male Bufflehead surrounded by a bevy of female Ruddy Ducks at Stow Lake, Golden Gate Park.

An immature male Hooded Merganser, ID'd by black and white wing bars and yellow eyes, still with his mam's headgear.

There was a large flock of Northern Shovelers gyrating in Stow Lake, and nearby this lone Shoveler couple doing their own private dance.