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Checklist S10448161

 
Location
Bear River MBR -- Auto Tour Loop, Box Elder County, Utah, US ( Map ) ( Hotspot )
Date and Effort
Sat Apr 14, 2012 10:06 AM
Protocol:
Traveling
Party Size:
4
Duration:
4 hour(s), 17 minute(s)
Distance:
12.8 mile(s)
Observers:
Anne Shifrer List , Ryan P. O'Donnell
Comments:
Bridgerland Audubon Society field trip, led by Ryan O'Donnell. Also heard singing Boreal Chorus Frogs and one Northern Leopard Frog.
Species
51 species (+2 other taxa) total
X
2

One pair seen together. Relatively small bills helped eliminate Trumpeter Swan, but too distant to make out yellow in lores.

Breeding Code
P Pair in Suitable Habitat (Probable)
X
X
X
30
X
X
X
2
Age & Sex
Juvenile Immature Adult Age Unknown
Male 1
Female 1
Sex Unknown
15
5
X
X
1
Age & Sex
Juvenile Immature Adult Age Unknown
Male 1
Female
Sex Unknown
1
Bufflehead x Common Goldeneye (hybrid)

Apparently only the fourth individual of this hybrid combination in eBird. Watched diving, at a pretty great distance. Sketch in field notes. Digiscoped and videoed, by RPO:

10a Bufflehead x Common Goldeneye hybrid frame grab

Sketch made in the field, from life:

Field sketch of hybrid Bufflehead x Common Goldeneye

Video here: http://www.flickr.com/photos/tsirtalis/6932146132
and here:
http://www.flickr.com/photos/tsirtalis/7078226753

Age & Sex
Juvenile Immature Adult Age Unknown
Male 1
Female
Sex Unknown
X
1
5
X
X
4
X
Western/Clark's Grebe
X
X

Dozens to low hundreds.

X

Hundreds to maybe a thousand.

8
7

Actual count.

15

Actual count.

2

Assumed to be Long-billed, the expected species here, but probably too distant to confidently rule out Short-billed Dowitcher.

3
1

In full breeding plumage.

Age & Sex
Juvenile Immature Adult Age Unknown
Male
Female
Sex Unknown 1
400
X
X
5
50
X
X
1
4
X
4
2
1000

Thousands, easily. This number is a very coarse estimate.

3
6
30
200

Coarse estimate. About one every 50 feet for the entire loop.

5

Subspecies group assumed by location.

Breeding Code
S Singing Male (Possible)
5
Breeding Code
S Singing Male (Possible)
X

Dozens.

X

Dozens to hundreds.

Additional species seen by Anne Shifrer:
X
Great Blue Heron
5
Savannah Sparrow
 

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

Yes