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Checklist S46073392

 
Location
Rodeo Lagoon, Marin County, California, US ( Map ) ( Hotspot )
Date and Effort
Sun May 27, 2018 6:30 AM
Protocol:
Traveling
Party Size:
2
Duration:
2 hour(s), 45 minute(s)
Distance:
2.5 mile(s)
Observers:
David Wiechers List , William Legge
Comments:
Wind WSW, light, overcast with fog above 400 feet, 13C/55F. 30 minute sea watch from Rodeo Beach followed by a circuit of the main lagoon. Mammals of note: 1 River Otter in the main lagoon.
Species
60 species (+1 other taxa) total
2
Canada Goose
4
Mallard
55
Surf Scoter

54 in a raft on the ocean off Rodeo Beach and 1 on the main lagoon (male)

1
California Quail
10
Western Grebe

On the ocean off Rodeo Beach

2
Eurasian Collared-Dove
1
White-throated Swift
7
Anna's Hummingbird
1
Allen's Hummingbird

Male

1
Rufous/Allen's Hummingbird
1
Black Oystercatcher

On nest on Bird Island

Breeding Code
ON Occupied Nest (Confirmed)
82
Common Murre

75+ flew S offshore and 7+ on Bird Island

3
Pigeon Guillemot

On the ocean or seen in flight offshore

30
Western Gull
10
California Gull

Flew S along the coastline

1
Glaucous-winged Gull

1st summer visited the main lagoon briefly before flying out over the ocean

3
Caspian Tern

Flew over SE or S offshore

3
Red-throated Loon

1 in the main lagoon (in breeding plumage), 1 few up Rodeo Valley, returning and leaving N offshore and 1 flew S offshore

10
Pacific Loon

A flock of 10 flew S offshore - many in breeding plumage

1
Common Loon

On the ocean off Rodeo Beach

185
Brandt's Cormorant

Flew S offshore

5
Pelagic Cormorant

3 on the ocean and 2 flew N offshore

4
Double-crested Cormorant

Main lagoon

50
Brown Pelican

41 on Bird Island and 7 flew N and 2 S offshore

1
Great Blue Heron
4
Snowy Egret
3
Black-crowned Night-Heron

Two adults and a 1st summer (2nd CY).

1
Turkey Vulture
1
Red-tailed Hawk
1
Downy Woodpecker
2
Northern Flicker
2
Black Phoebe
1
Hutton's Vireo
3
California Scrub-Jay
2
American Crow
2
Common Raven
1
Tree Swallow
1
Violet-green Swallow
4
Barn Swallow
10
Cliff Swallow
2
Chestnut-backed Chickadee
26
Bushtit

In a single post-breeding flock near the Headlands Visitor Center.

2
Bewick's Wren
8
Wrentit
2
Western Bluebird
7
Swainson's Thrush
4
American Robin
4
European Starling
Breeding Code
CF Carrying Food (Confirmed)
13
Cedar Waxwing

Single flock overhead

3
House Finch
11
Purple Finch
8
American Goldfinch
1
White-crowned Sparrow
6
Song Sparrow
1
California Towhee
5
Spotted Towhee
5
Red-winged Blackbird (California Bicolored)
2
Great-tailed Grackle

Picked up flying over the western end of the main lagoon about 200 feet up at c. 9:10am being pursued by an American Crow, before changing direction and flying back SE and over the main lagoon calling and disappearing into the fog. Only the fourth record of this species at this location, and my second! Probably females/immatures.

Breeding Code
F Flyover (Observed)
2
Orange-crowned Warbler

Adult feeding a recently fledgling

Breeding Code
FL Recently Fledged Young (Confirmed)
6
Common Yellowthroat
11
Wilson's Warbler
 

Are you submitting a complete checklist of the birds you were able to identify?

Yes