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Checklist S31856606

 
Location
Babel Slough , Yolo County, California, US ( Map ) ( Hotspot )
Date and Effort
Sun Oct 02, 2016 6:36 AM
Protocol:
Traveling
Party Size:
1
Duration:
2 hour(s), 54 minute(s)
Distance:
4.0 mile(s)
Observers:
Gil Ewing
Comments:
Here before sun-up today. Cool, 46 degrees at start, 63 by end. Walked 1.8 miles and drove another two, approximately. Highlights were a cooperative American Mink, a first-year male American Redstart, and 95 Swainson's Hawks. There definitely seemed to be a southwesterly movement of flickers, jays, and maybe other birds. Most of our usual migrant species: vireos, orioles, grosbeaks, buntings, Empids, etc. were absent.
Photo of the mink: https://flic.kr/p/MLCNsj
Species
69 species total
6
176

These were counted as they flew over in over 10 separate groups, all going southwest. When they all flew back in one large group going back toward the river there seemed to be even more.

11

Included a flock of nine flying past over the cornfield.

1

A single flying over at dawn was the only one!

8
15

Eight of these were on the ground near the Swanson's Hawks.

3

Flew over going north at sunrise.

4
Breeding Code
F Flyover (Observed)
1
Breeding Code
F Flyover (Observed)
4

All fly-overs.

5
Breeding Code
F Flyover (Observed)

© Gil Ewing

13
1

Carrying a fish that it had caught at the Sacramento River.

Breeding Code
F Flyover (Observed)
3
1
1
2
95

Fifteen had been observed flying out of a night roost in the tall cottonwoods by the Sacramento River, but when I went farther down the road, I was able to count exactly 95 Swainson's Hawks on the ground on a huge, recently plowed fiend on the south side of the road at the gray mailbox with "93" on it.

3
1

Flushed from roadside before dawn.

2

Both flushed from roadside before dawn

1
1
2
3
13

All were counted flying toward the southwest along the roadside treetops.

2
1

Observed carrying a dark prey item suggestive of a blackbird or rat.

7
15

Incuded a group of nine that was moving southwesterly as a flock.

4
51
1
100

An estimate. All but two of these showed up in large swarming flock at the end of this checklist period.

5
5

All five were flying northward at first light.

26
2
6
3
1
1
4

Three were calling at the same time, at the redstart location.

1
2
2
9
24
250

An estimate of the huge number that was seen swarming into the air all at one time, when something unseen stirred them up.

5
3
4
4
11
2
1
3
14
1
6
205
2
2
2
1

A first-year male was found in the oaks by the former railroad crossing 0.5 miles s.w. of S. River Rd. Starting to get dark lores and a few black feathers on the cheek and upper breast. Orange sides. The bird was very active, high up, and mostly in poor light, so was difficult to photograph.

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

© Gil Ewing

Lateral oblique view.

Age:
Immature
Sex:
Male

© Gil Ewing

Average Quality

Underside of tail.

Age:
Immature
Sex:
Male

© Gil Ewing

Average Quality

Ventral view, altered significantly because of severe backlighting.

Age:
Immature
Sex:
Male

© Gil Ewing

Average Quality

Severely cropped and lightened enlargement showing throat, legs, and underside.

Age:
Immature
Sex:
Male
2
5
1
3
 

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

Yes