Verification of Unusual
Rec. # 2002-33
|Scientific name:||Buteo platypterus|
|Length of time observed:||5 minutes|
|Location:||Beaver Dam Wash, Lytle Ranch|
|Elevation:||~ 850 m|
|Distance to bird:||
15-100 m, varied as it soared above us
|Optical equipment:||10x42 binoculars|
|Weather:||Clear and calm|
|Light Conditions:||Clear and bright|
|Detailed description of bird:||
Very small buteo, about 40-50% larger than nearby Sharp-shinned Hawk. (Kristen
Comella, Grant Jense, and Mike Walters all commented that it was smaller than C.
Black-Hawks observed earlier in the morning). Throat and upper chest was solid
dark rufous. Breast heavily barred, barring diminishing towards tail. Underside
of wings was very pale/white, with dark border along trailing edge from leading
to tail. Underside of short tail banded black and white, with a large prominant white band, and smaller pale terminal edge. An additional band (near the rump) was evident on the upperside of the tail. Feet were yellow.
|Song or call & method of delivery:||
Gave a high pitched whistle as it came into view flying
over the riparian area, and was harassed by a Sharp-shinned Hawk.
|Behavior:||We noticed it when it called, as it was being harrassed by a Sharp-shinned Hawk. It soared over the Lytle Ranch house and parking area for several minutes before we lost sight of it soaring down the Beaver Dam Wash.|
|Habitat:||Desert riparian corridor.|
how were they eliminated:
Red-tailed Hawk: larger and have black on leading edge of patagium.
Common Black-Hawk: also larger but have similar banded tail, however wings and body are dark.
Swainson's Hawk (light-morph): larger with more narrow pointed wings. They do have white wing linings however flight feathers are dark (rather than only trailing edge).
Red-shouldered Hawk: similar in size, however multiple bands on tail and underwing is two-toned (darker linings and paler flight feathers). In addition all these species have different vocalizations.
|Previous experience with this & similar species:||I've seen both Broad-winged and Red-shouldered Hawks many times over the last 10 years.|
|References consulted:||Peterson Field Guide to Western Birds|
|Description from:||Notes taken at time of sighting|
|Observer:||Rick Fridell, Kristen Comella|
|Observer's address:||3505 West 290 North, Hurricane UT 84737|
|Observer's e-mail address:||firstname.lastname@example.org|
observers who independently identified
|Grant Jense and Mike Walters|
|Date prepared:||10-20-02 (General Public)|
|Additional comments:||Description is taken from notes and very rough sketch completed immediately after viewing this hawk.|