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Checklist S43757781

 
Location
Rodeo Lagoon, Marin County, California, US ( Map ) ( Hotspot )
Date and Effort
Sun Mar 18, 2018 7:30 AM
Protocol:
Traveling
Party Size:
2
Duration:
3 hour(s)
Distance:
2.5 mile(s)
Observers:
David Wiechers List , William Legge
Comments:
Wind NE, light, hazy sunshine, with temperatures rising to 12C/54F. 45 minute sea watch from Rodeo Beach followed by a circuit of the main lagoon. Mammals of note: 1+ River Otter in the main lagoon, and offshore, 2 Harbor Seal and 10+ California Sea Lions (on and around the green buoy).
Species
55 species total
12

7 flew into the main lagoon (4 leaving later), and a flock of 5 flew S high along the coastline

3
7

Main lagoon - including 3 adult males

850

Large raft of 770+ on the ocean west/northwest of Rodeo Beach and another 80 on the ocean off Bird Island.

1

Female/1st winter flew in from the south and landed in the Surf Scoter flock WNW of Rodeo Beach.

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

Female/1st winter on the main lagoon

4

Two 1st winter males and two females at the western end of the main lagoon

3

A pair and a single female on the main lagoon

3
4

Main lagoon

1

Main lagoon

8

On the off Rodeo Beach

1

On the ocean offshore Rodeo Beach

7
60

Most flying N offshore with 10+ on the ocean off Rodeo Beach

6

3 on the ocean, 2 1st winters visited the main lagoon briefly and an adult flew N offshore

25
2

Flew over SE

1

1st winter on Bird Island

1

1st winter offshore

16

11+ on the ocean off Rodeo Beach and 4 flew N and 1 S offshore

100

90+ flew S and 10+ N offshore

9

7+ on the ocean off Rodeo Beach and 2 flew N offshore

2

Main lagoon

2

Flew over SE high and loosely together

Breeding Code
F Flyover (Observed)
3
2
1

Roosting in willows at the main lagoon

Age & Sex
Juvenile Immature Adult Age Unknown
Male
Female
Sex Unknown 1
9
4

Including a 1st winter

1

Heard only

3
2
18

Including 11 flying over high NW in groups of 1, 5 & 5

Breeding Code
F Flyover (Observed)
8
3
5
2
3
7
4
4
6
2
9
16
7
12
12
3
1
2
1
Breeding Code
S7 Singing Male Present 7+ days (Probable)
8
10
 

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

Yes