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Checklist S44276926

 
Location
Rodeo Lagoon, Marin County, California, US ( Map ) ( Hotspot )
Date and Effort
Thu Apr 05, 2018 7:30 AM
Protocol:
Traveling
Party Size:
1
Duration:
2 hour(s), 50 minute(s)
Distance:
2.5 mile(s)
Observers:
William Legge
Comments:
Wind NW, initially very light but increasing as the morning progressed, 13C/56F. 40 minute sea watch from Rodeo Beach followed by a circuit of the main lagoon.
Species
63 species total
105
Brant

Flew past N offshore, low to the ocean in flocks of 47, c. 40 and 18 in 40 minutes of sea watching, so this species is definitely on the move today.

Breeding Code
F Flyover (Observed)
3
Canada Goose

Main lagoon

6
Mallard
850
Surf Scoter

Large raft on the ocean off Rodeo Beach

1
Pied-billed Grebe

Main lagoon

30
Western Grebe

Estimate - on the ocean off Rodeo Beach

2
Mourning Dove
15
Anna's Hummingbird
1
Allen's Hummingbird

male

4
Black Oystercatcher

Two pair in flight off Rodeo Beach and around Bird Island

2
Long-billed Curlew

Singles flew N offshore

1
Black Turnstone

On Bird Island - feeding on lower rocks

400
Common Murre

Estimate - in flight mainly heading N and 20+ on the ocean

6
Pigeon Guillemot

On the ocean around Bird Island

30
Western Gull

Mainly Bird Island

10
California Gull

Feeding offshore with Western Gulls

1
Glaucous-winged Gull

2nd winter flew over SW

Breeding Code
F Flyover (Observed)
3
Caspian Tern

Feeding offshore

7
Red-throated Loon

1 on the main lagoon in transitional plumage, 3 on the ocean off Rodeo Beach and 2 flew N and 1 S offshore

235
Brandt's Cormorant

Feeding flock of c. 200 offshore Rodeo Beach and 35+ flew S offshore

6
Pelagic Cormorant

On the ocean off Rodeo Beach

2
Double-crested Cormorant

Main lagoon

2
Great Egret
5
Snowy Egret

Three present and two flew N offshore

1
Black-crowned Night-Heron

Adult - perhaps two present

3
Turkey Vulture
1
Cooper's Hawk

1st winter/2nd CY

2
Red-tailed Hawk

Adult and a 2nd CY/1st winter

1
Belted Kingfisher
Age & Sex
Juvenile Immature Adult Age Unknown
Male
Female 1
Sex Unknown
2
Pileated Woodpecker

A nice surprise. Two flew over SE within 200 feet of each other about c. 250 feet up. Picked up over flying the main lagoon and they just continued their way purposefully SE, over the Marin Headlands Visitor Center and into the Headlands beyond. Big flappy wing beats - more exaggerated than American Crow. My third record in spring (second in April) of this species at this site, so there seems to be a spring dispersal of Pileated Woodpeckers!

Breeding Code
F Flyover (Observed)
1
Northern Flicker

Heard only

2
Black Phoebe
1
Hutton's Vireo

Heard only

3
California Scrub-Jay
8
American Crow

Mostly flying over with 5 NW ad 1 S

Breeding Code
F Flyover (Observed)
5
Common Raven
2
Barn Swallow
1
Cliff Swallow
2
Chestnut-backed Chickadee
2
Bushtit
1
Marsh Wren
4
Bewick's Wren
9
Wrentit
1
Western Bluebird
1
Hermit Thrush
2
American Robin
9
European Starling
8
House Finch
9
Purple Finch
3
American Goldfinch
1
Fox Sparrow (Sooty)
2
Dark-eyed Junco (Oregon)
9
White-crowned Sparrow
1
Golden-crowned Sparrow
10
Song Sparrow
1
California Towhee
1
Spotted Towhee
6
Red-winged Blackbird (California Bicolored)
1
Brewer's Blackbird
1
Orange-crowned Warbler
Breeding Code
S7 Singing Male Present 7+ days (Probable)
5
Common Yellowthroat
12
Yellow-rumped Warbler (Audubon's)
5
Wilson's Warbler
 

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

Yes