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Checklist S48248057

 
Location
Rodeo Lagoon, Marin County, California, US ( Map ) ( Hotspot )
Date and Effort
Sun Sep 02, 2018 6:50 AM
Protocol:
Traveling
Party Size:
1
Duration:
3 hour(s), 30 minute(s)
Distance:
2.5 mile(s)
Observers:
William Legge
Comments:
Wind W, light but increasing, overcast, low clouds/fog above 350 feet, temperatures rising to 16C/60F. 20 minute sea watch from Rodeo Beach followed by a circuit of the main lagoon. Mammals of note: The family of River Otters in the main lagoon.
Species
56 species (+1 other taxa) total
25
Mallard
38
California Quail

In three groups

1
Anna's Hummingbird
1
Virginia Rail

Heard only from the inner lagoon

1
Least Sandpiper

Western shore of the main lagoon

2
Western Sandpiper

Western shore/mud spit midway down the southern shore of the main lagoon.

18
Red-necked Phalarope

Eastern end of the main lagoon

1
Parasitic Jaeger

Tracking Elegant Terns offshore

20
Common Murre

On the ocean off Rodeo Beach

1
Pigeon Guillemot

Juvenile/1str winter on the ocean off Rodeo Beach

1000
Heermann's Gull

850+ on Bird Island and 150 feeding offshore

25
Western Gull
13
California Gull

9 juveniles/1st winters at the main lagoon, 3 adults briefly and 1 flew S offshore

1
Caspian Tern
ML113278321

© William Legge

Average Quality

Caspian Tern - Rodeo Lagoon, Marin County, California, USA - September 2, 2018

Age:
Adult
Sex:
Sex Unknown
170
Elegant Tern

Flew N offshore in a 10 minute period, some stopping to feed

380
Brandt's Cormorant

325 on Bird Island, and 55 flew N offshore

23
Double-crested Cormorant

20 flew over NW (in groups of 17 & 3) and 3 on the main lagoon

Breeding Code
F Flyover (Observed)
740
Brown Pelican

Up to 175+ on the main lagoon, 160 on Bird Island and 405 flew N offshore in 20 minutes of sea watching

2
Great Blue Heron
5
Great Egret
11
Snowy Egret
1
Black-crowned Night-Heron

Juvenile

1
Turkey Vulture
1
Northern Flicker

Heard only

1
Western Wood-Pewee

Simmonds Road

2
Willow Flycatcher
2
Pacific-slope Flycatcher
6
Pacific-slope/Cordilleran Flycatcher (Western Flycatcher)
3
Black Phoebe
1
Warbling Vireo
5
California Scrub-Jay
13
American Crow

Slowly worked their way SE in a flock - first detected movement of the fall

Breeding Code
F Flyover (Observed)
1
Common Raven
10
Northern Rough-winged Swallow

Including 6 moving S

1
Tree Swallow
4
Violet-green Swallow
16
Barn Swallow

10+ present and a flock of 6 flew S along the beach

4
Chestnut-backed Chickadee
12
Bewick's Wren
10
Wrentit
5
Western Bluebird
8
European Starling
8
House Finch
2
Purple Finch
5
American Goldfinch
ML113279341

© William Legge

Average Quality

Molting male American Goldfinch - Rodeo Lagoon, Marin County, California, USA - September 2, 2018

Age:
Adult
Sex:
Male
9
White-crowned Sparrow
3
Savannah Sparrow

Together in the dunes at the western end of the main lagoon

9
Song Sparrow
2
California Towhee
7
Spotted Towhee
1
Orange-crowned Warbler
27
Common Yellowthroat
30
Yellow Warbler

Exact count although almost certainly an underestimate of the true number out there right now.

1
Black-throated Gray Warbler

1st winter in willows along Lagoon Trail (south side of the main lagoon)

2
Townsend's Warbler

Simmonds Road Cypress trees

10
Wilson's Warbler
1
Western Tanager
 

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

Yes