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Checklist S47863687

 
Location
Rodeo Lagoon, Marin County, California, US ( Map ) ( Hotspot )
Date and Effort
Wed Aug 15, 2018 6:45 AM
Protocol:
Traveling
Party Size:
2
Duration:
3 hour(s), 5 minute(s)
Distance:
2.3 mile(s)
Observers:
David Wiechers List , William Legge
Comments:
Wind NW, light, overcast with low clouds/fog above 400 feet, 13C/55F. 30 minute sea watch from Rodeo Beach followed by a near circuit of the main lagoon. Mammals of note: 1 Harbor Seal offshore. A decent pulse of migrants including the first migrant wildfowl of the Fall!
Species
58 species total
2

Together feeding at the eastern end of the main lagoon with Mallard. New in, a scarce visitor to the lagoon at any time of the year

9
1

Female/1st winter located at the eastern end of the main lagoon. By far my earliest record of Ring-necked Duck at this location!

ML110983431

© William Legge

Ring-necked Duck (Female/1st winter) - Rodeo Lagoon, Marin County, California, USA - August 15, 2018

Age:
Unknown
Sex:
Female
16

On the ocean off Rodeo Beach

15
3

In a flock - flew over NW

Breeding Code
F Flyover (Observed)
1
1

Heard only from the inner lagoon

2

Bird Island

4

In a single flock heading N along the coastline

Breeding Code
F Flyover (Observed)
5

Western shore of the main lagoon

1

Perhaps two. Western shore of the main lagoon, with the same or another seen at the eastern end later

15

On the ocean off Rodeo Beach

2

Adult on the ocean or seen in flight offshore

450

425 on Bird Island and up to 25 visiting the main lagoon at anyone time

40
14

5 on the ocean and 9 on the main lagoon

ML110982901

© William Legge

California Gull (Juvenile/1st winter) - Rodeo Lagoon, Marin County, California, USA - August 15, 2018

Age:
Juvenile
Sex:
Sex Unknown
10
1

On the ocean off Rodeo Beach

250

Estimate: 200 on Bird Island, 30+ flew N offshore and 20 on the ocean off Rodeo Beach

4

3 flew N along the coastline and 1 at the main lagoon

290

180+ on Bird Island, 50 flew N offshore and up to 60 on the main lagoon at any one time

2
16
6
5

2 adults, 2 juveniles and a 1st summer (2nd CY) present

1
2

Adults

1
1

Heard only

1
2
1

In the south willows

4
1
5
8
6
5
1
1
4
2

In flight above the quarry on the north side of the main lagoon

10
5
2

Heard only

1
5

In a flock flying over W

Breeding Code
F Flyover (Observed)
12
5
3
21

Including a flock 18

5
2
3
1
9
5
 

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

Yes