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Checklist S39919789

 
Location
Rodeo Lagoon, Marin County, California, US ( Map ) ( Hotspot )
Date and Effort
Sat Oct 14, 2017 7:55 AM
Protocol:
Traveling
Party Size:
1
Duration:
2 hour(s), 50 minute(s)
Distance:
2.5 mile(s)
Observers:
William Legge
Comments:
Wind ENE, gusty to 20+mph, clear and sunny with the hazy smoke being pushed offshore. Temperatures rising to 20C/68F. Circuit of the main lagoon. Mammals of note: 3 River Otters in the main lagoon. Classic fall visual migration conditions with a moderately strong offshore wind pushing birds to the coast/outer Marin Headlands! 'Vis-mig' movements largely dried up by 9:30am. Too windy to see much in the willows and many grounded passerines keeping out of the wind and out of sight!
Species
68 species (+1 other taxa) total
1
Greater White-fronted Goose

The continuing 1st winter at the main lagoon

1
Cackling Goose (Aleutian)

1st winter on the main lagoon

1
American Wigeon

Male at the eastern end of the main lagoon

31
Mallard

Notable influx - main lagoon

2
Surf Scoter

In flight offshore

2
California Quail
9
Pied-billed Grebe

Main lagoon

2
Eared Grebe

Main lagoon

5
Western Grebe

1 on the main lagoon and 4+ offshore

18
Band-tailed Pigeon

Flew over heading SE in groups of 17 + 1

Breeding Code
F Flyover (Observed)
4
Virginia Rail

Heard only - 3 from the main lagoon and 1 from the inner lagoon

1
Common Gallinule

The continuing 2nd CY bird at the eastern end of the main lagoon

7
American Coot

Main lagoon

3
Killdeer
1
Long-billed Dowitcher

Main lagoon outlet channel

2
Wilson's Snipe

Main lagoon outlet channel

1
Greater Yellowlegs

Main lagoon outlet channel

13
Heermann's Gull

Flock on the ocean off Rodeo Beach

20
Western Gull
10
California Gull

On or over the ocean off Rodeo Beach, plus a 1st winter at the main lagoon

3
Brandt's Cormorant

Flew S offshore

8
Double-crested Cormorant

7+ at the main lagoon and 1 flew NW high overhead

19
Brown Pelican

Flew N offshore/over the coastline

2
Great Blue Heron
20
Great Egret

4 at the main lagoon and a loose flock of 16 flew N offshore, battling the NE wind at c. 8:05am!

Breeding Code
F Flyover (Observed)
3
Snowy Egret

2 present and 1 flew N offshore with the Great Egret flock

3
Turkey Vulture
1
Osprey

Over the western end of the main lagoon, left NW over the ocean high.

1
Northern Harrier

1st winter hunting on the hillside to the south of the main lagoon

1
Sharp-shinned Hawk

Flew through S

Breeding Code
F Flyover (Observed)
1
Red-shouldered Hawk

Adult

3
Red-tailed Hawk

Adults

1
Northern Flicker
2
American Kestrel

Female over the beach dunes and heading N and the now regular male near the Headlands Visitor Center

Age & Sex
Juvenile Immature Adult Age Unknown
Male 1
Female 1
Sex Unknown
1
Prairie Falcon

Soaring over the main lagoon leaving SE up Rodeo Valley at c. 8:58am. Pale grey-brown color above, very pale cream tail and under-wing and anemic falcon greyish -brown head pattern.

Breeding Code
F Flyover (Observed)
2
Black Phoebe
1
Say's Phoebe

Beach dunes

4
California Scrub-Jay
1
American Crow
5
Common Raven
19
Violet-green Swallow

Moved through SE in groups of 18 + 1

Breeding Code
F Flyover (Observed)
1
Chestnut-backed Chickadee
2
Bushtit
2
House Wren
2
Bewick's Wren
2
Ruby-crowned Kinglet
8
Wrentit
9
Western Bluebird
1
Varied Thrush

Flew SE over of the main lagoon, briefly landing in the Eucalyptus trees at the Marin Headlands Visitor Center before continuing on south east up Rodeo Valley

Breeding Code
F Flyover (Observed)
2
Hermit Thrush
4
European Starling
53
American Pipit

Flew over SE in groups of 3, 6, 27, 2, 13, 1 & 1, mainly over Rodeo Beach from the NW and up the south side of Rodeo Lagoon and over the gap to the south of the main lagoon - many seen at head height as they flew over the beach. Passage tapered off by 8:45am.

Breeding Code
F Flyover (Observed)
5
House Finch
9
Purple Finch
7
Pine Siskin

Flew through SE in groups of 2 & 5

Breeding Code
F Flyover (Observed)
4
Lesser Goldfinch

Flew over SE as a single flock

Breeding Code
F Flyover (Observed)
1
American Goldfinch
10
Fox Sparrow (Sooty)
8
Dark-eyed Junco (Oregon)

A flock of 7 flew SE up Rodeo Valley and 1 at Simmonds Road

Breeding Code
F Flyover (Observed)
10
White-crowned Sparrow
4
Golden-crowned Sparrow
9
Song Sparrow
3
Spotted Towhee
1
Western Meadowlark

In dunes at the western end of the main lagoon

19
Red-winged Blackbird (California Bicolored)

Flew over heading SE in flocks of 15 + 4

Breeding Code
F Flyover (Observed)
13
Brewer's Blackbird

6 present and a flock of 7 flew over SE

10
blackbird sp.

Flew over high SE - Red-winged or Tricolored.

Breeding Code
F Flyover (Observed)
1
Common Yellowthroat
19
Yellow-rumped Warbler (Audubon's)
 

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

Yes