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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
4
55

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

1
10

On the ocean off Rodeo Beach

2
1
7
1

Male

1
Rufous/Allen's Hummingbird
1

On nest on Bird Island

Breeding Code
ON Occupied Nest (Confirmed)
82

75+ flew S offshore and 7+ on Bird Island

3

On the ocean or seen in flight offshore

30
10

Flew S along the coastline

1

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

3

Flew over SE or S offshore

3

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

10

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

1

On the ocean off Rodeo Beach

185

Flew S offshore

5

3 on the ocean and 2 flew N offshore

4

Main lagoon

50

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

1
4
3

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

1
1
1
2
2
1
3
2
2
1
1
4
10
2
26

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

2
8
2
7
4
4
Breeding Code
CF Carrying Food (Confirmed)
13

Single flock overhead

3
11
8
1
6
1
5
5
2

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

Adult feeding a recently fledgling

Breeding Code
FL Recently Fledged Young (Confirmed)
6
11
 

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

Yes