Verification of Unusual
Rec. # 2010-17
|Scientific name:||Plegadis facinellus|
|Date:||April 24, 2010|
|Length of time observed:||30 min +|
|Location:||Bear River MBR, .1 mi NE of observation tower at S end of auto tour loop|
|Distance to bird:||50 meters, as per the range finder in Jack's camera lens|
|Optical equipment:||10 x 42 and 8 x 42 binos; 85 mm scope w/20-60x eyepiece|
|Weather:||Clear and sunny, temps in the 50s|
|Light Conditions:||Bright, sun at our backs|
|Description: Size of bird:||Same as nearby WF Ibis|
|(Description:) Basic Shape:||Flattened football|
|(Description:) Overall Pattern:||Brown and rust with iridescent tones|
|(Description:) Bill Type:||Long, sturdy, decurved|
Field Marks and
Clearly a Plegadis ibis by appearance similar to White-faced. About 18 inches
tall from the ground, long neck and legs, long decurved bill. Overall a warm
brown with rusty scapulars that wrapped around the front of the wing; color
merged on the underparts and proceeded to just aft of the legs. Wing coverts,
flight feathers, tail above and below a base brown with dark greenish to violet
iridescent tones. Iridescent tones tended toward green rather than bronzy or
coppery; seemed less colorful than nearby WF-Ibis.
Eye: Brown. No glint of red in any light or at any angle.
Facial skin: Powder blue, narrow border that started at the top of each eye, proceeded forward of the eye and thickened, then narrowed again and wrapped around the front of the forehead. Also began below the eye, proceeded forward with a small thicker area where the border met the lower mandible. Blue color did not wrap behind the eye. Lores area was also pale blue. No pink, purple, lavendar or violet.
Legs: Gray above and below tibio-tarsal joint; joint itself was pink. Colors noted when entire leg was wet.
|Song or call & method of delivery:||None heard.|
|Behavior:||Foraging in water sometimes just below tibio-tarsal joint; sometimes as deep as the bird's belly. Fast, rhythmic foraging underwater with many probing motions, then above the water with a backward head jerk to toss some object into the back of the throat, followed by another head plunge. Foraged without stopping during the entire observation period.|
|Habitat:||Open wetland with little vegetation in the immediate area.|
were they eliminated:
White-faced Ibis: No white feathering around the face; no red in the eye; no red
or pink in the facial skin; tibio-tarsal joint was pink while leg above and
below was gray. White-faced Ibis should have shown more or less of all of the
features above except for the pink leg joint, and especially a red eye and red
or pink in the face.
White-faced x Glossy Ibis: No glint of red in the eye at any angle in outstanding lighting conditions and distance. No other color facial skin besides pale blue.
this & similar species:
Jack: Has found and photographed a Glossy Ibis most years since the species was
detected in Utah in 2006 and submitted records most years; all were accepted.
Extensive experience with WF; one possible hybrid in 2007.
Kris: Extensive with both species; none with hybrids.
References: At home, after photos taken and notes documented:
Jack: Sibley, 2000, and previous photos.
Kris: Sibley, 2000; sight records back through 2006; Kaufman, 1990; Leukering, 2008.
|Description from:||Notes taken at time of sighting|
|Observer:||Jack Binch, Kristin Purdy|
|Observer's address:||Sandy (Jack), Ogden (Kris)|
|Observer's e-mail address:||firstname.lastname@example.org, email@example.com|
|Other observers who independently identified this bird:||Jack found and identified the bird and put out the call; other birders already on the refuge converged on the spot, including Kris, Betsy Beneke, Cindy and Steve Sommerfeld, Bob Huntington, Geoff Hardies and Bob MacDougall. I believe all agreed with the ID by virtue of their own observations.|
|Date prepared:||April 27, 2010|
|Additional_Comments:||Notes taken independently of photos.|