3), 3 Swainson's Hawks
(Buteo swainsoni), 2 Ferruginous Hawks (Buteo regalis), 1 Rough-legged Hawk (Buteo lagopus), and 1 Turkey Vulture (Cathartes aura) to the test enclosure (n = 17; Table 1).
We conducted surveys in four intensive periods each year: late April and early May (when ferruginous hawks were incubating and when Swainson's hawks
were establishing territories); late May; mid- to late June (when ferruginous hawks were fledging); and early July (when Swainson's hawk
young were large enough for us to see and count in the nest).
Twixt Heaven and Earth is the story of Swainson's hawk
, an endangered bird found in Canada and the United States.
Several years ago, wildlife researchers began to observe unexplained changes in the Swainson's hawk
(Buteo swainsoni) population in North America.
For their 12 Seder, after the question, "Why is this night different?" was asked and answered, Rea and Ijichi had participants mention the locally extinct species by name: the California condor, the yellow-billed cuckoo, Swainson's hawk
, the bank swallow, the black rail, the Fulvous tree duck, as well as the pronghorn (the American antelope), the long-earned kit fox, and the Southern California grizzly.
A hatch-year Swainson's hawk
(Buteo swainsoni) recovered from Modoc County, California, USA, on August 12, 2012, had malformations of the rear limbs consisting of bilateral polymelia and syndactyly.
As part of a study on reproductive success of Swainson's hawk
(Buteo swainsonii), we regularly traveled on roads through the area.
In the present survey, this nematode was found only in the falconiform Swainson's hawk
The Boardman Bombing Range contains a large expanse of suitable habitat for this species, and it is a stronghold for other sensitive species including the American badger (Taxidea taxus), ferruginous hawk (Buteo regalis), Swainson's hawk
Species tested positive (%) seroconverted Swainson's hawk
28 8 (28.6) 5 Red-tailed hawk 13 4 (30.8) 2 Ferruginous hawk 1 1 (100.0) 0 American kestrel * 32 0 -- Peregrine falcon 2 1 (50.0) 1 Golden eagle 3 1 (33.3) 1 Great horned owl 23 4 (17.4) 3 Barn owl 24 0 -- Long-eared owl 5 0 -- Other species ([dagger]) 10 0 -- Total 141 19 (13.5) 12 No.
In North America, the word hawk is also applied to members of the genus Buteo, such as the red-tailed hawk and Swainson's hawk
. Both genera, Accipiter and Buteo, are part of the family Accipitridae.
Previous reports of knemidokoptic mange in raptors are scarce and include K mutans in a great-horned owl (Bubo virginianus) (10) and unidentified Knemidokoptes species in a snowy owl (Nyctea scandiaca), (11) a Swainson's hawk
(Buteo swainsoni), (12) and in accipiters in Great Britain." To our knowledge, no Micnemidocoptes mite has been found on a raptor previously and the congeneric, M derooi, was only described once in African palm swifts (Cypsiurus parvus) (4) Another golden eagle identified concurrently with this case was infested with the same mite, based on SEM and DNA testing.