Red-throated Loon (Gavia stellata), Roosevelt Lake, Gila County
juvenile Red-throated Loon was discovered and photographed by Troy Corman on 19 January 2009
in a restricted section of Roosevelt Lake.
There are about a dozen accepted records for AZ,
and this likely a first report for Gila County
First-winter bird in
mostly juvenile plumage. In this plumage, the head and neck are darker than in
an adult. Distinctly smaller and trimmer proportions than
Common/Yellow-billed Loons. Key characteristics noted in images include bill held at a slight uptilted angle, pale speckled back and nape, exposed white flanks, uniform gray neck pattern extending onto lower neck, darker patch on upper throat with slight reddish tint, and white face with narrow white crescent above eye.
The only possible confusing species would be juvenile Pacific Loon.
However, in all basic-like plumages, Pacific Loon has a strong contrast line
between the dark dorsal side of the neck and the white ventral side.
19 January 2009, photo by Troy CormanAll photos are copyrighted© by photographer
General Map of Roosevelt Lake. Does not show specific location of bird:
Submitted on 20 January 2009