Verification of Unusual
Rec. # 2006-32
|Scientific name:||Dendroica pensylvanica|
|Date:||August 28, 2006|
|Time:||About 10:30 or 11:00 A.M.|
|Length of time observed:||5 Minutes|
|Location:||Clover Springs Campground|
|Distance to bird:||Closest view was about 30 feet|
|Optical equipment:||8x42 Binoculars|
|Weather:||Clear, Calm and Sunny. ~ 75°|
|Light Conditions:||The bird was in Full Sun for some of the viewing time. Very good lighting.|
|Description: Size of bird:||It was about the same size as the Chipping and Brewer's Sparrows that were in the area.|
|(Description:) Basic Shape:||Shaped like a warbler. Similar to a Yellow Warbler.|
|(Description:) Overall Pattern:||Yellow-green upper parts. Light gray underneath.|
|(Description:) Bill Type:||Thin, Short and pointed. Warbler like.|
Field Marks and
Face was light gray with a yellow-green cap on the top of the head and a bold
uniform white eye-ring.
The back was yellow-green from the rump up to the crown with a little green smudging on the areas of the Uppertail coverts and scapulars.
The wings were dark gray with bold wing-bars.
Tail was dark gray from above. The spread tail had white spots in the outer corners.
Chest and belly were a uniform light gray.
|Song or call & method of delivery:||I think I remember hearing chipping calls but I don t really recall.|
I first Saw the bird hopping with its tail cocked up on top of a mat of
watercress that was growing at the edge of the stream where the water first
comes up out of the spring. This area was out in the open with a wild rose bush
a few feet away. The bird then flew across and down stream into some junipers
were I was able to see the spread tail as it landed. (At this point I ran to the
car for my field guide and camera). The bird then flew from the area of the
junipers into a
chokecherry thicket near the top of the spring. It moved around within the chokecherry for a while. The bird did not hold the wings tight against the back but let them droop a little as it hopped around (See photo).
|Habitat:||Riparian. (Cottonwood, chokecherry, dogwood, rose.) Along a stream. Surrounded by hilly Pinyon and sagebrush habitat.|
were they eliminated:
I can not think of any other species that are very similar to the above
- Yellow Warbler would not have such bold wing-bars or such a sharp contrast between yellow upperparts and gray underparts or such a bold eye-ring.
- Bay-breasted, Blackpoll and Pine Warblers would have more color in the face and underparts (not uniform gray). They would have an eyestripe and not a complete bold eye-ring.
- Nashville and Virginia s Warblers have no wing-bars and have grayer backs.
- Orange-crowned and Tennessee Warblers would not have the complete eye-ring or bold wing-bars.
- Wilson s Warbler has yellow face, chest and belly. Has no wing-bars or white spots on the tail and no eye-ring.
- Goldfinches would have yellow on their chest, a thicker bill and No bold eye-ring.
- Ruby-crowned Kinglet, Hutton s and Yellow-throated Vireos and Empidonax Flycatchers are not as yellow on the upperparts or gray on the underparts, the eye-ring is not as evenly spaced around the eye and they do not have white in the tail.
this & similar species:
|I have seen a few adults back East but I don t recall ever seeing a first year Chestnut-sided Warbler before.|
|References consulted:||Sibley Guide to Birds.|
|Description from:||Notes made later|
|Observer's address:||850 East 100 North, Pleasant Grove, Utah 84062|
|Observer's e-mail address:||firstname.lastname@example.org|
|Other observers who independently identified this bird:||None... yet.|
|Date prepared:||August 29, 2006|