Visceral gout in two red‐tailed hawks (buteo jamaicensis)

Visceral gout in a rough legged hawk (Buteo lagopus).

Visceral gout is reported for the first time in a rough legged hawk (Buteo lagopus). Urate crystals were present on the pericardium, thoracic and abdominal air sacs, and the ventral surface of the liver. The liver and spleen also had urate crystals throughout the parenchyma. There was no indication of articular or renal involvement. The immediate cause of death in this hawk was not identified, ...

An Assessment of Stable Hydrogen-Isotope Analysis Methods to Assign Geographic Origin to Migratory Red-Tailed Hawks (Buteo jamaicensis)

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A Retrospective Study of Postmortem Findings in Redtailed Hawks

--We studied necropsy results from carcasses of 163 red-tailed hawks (Buteo jamaicensis) submitted to the National Wildlife Health Center from 1975 through 1992. The most frequent postmortem finding was emaciation of unknown etiology, diagnosed in 33 (20%) carcasses. Proportionally more juveniles than adults were emaciated. Evidence of non-gunshot rauma, often suggestive of collision with vehic...

Collisions of Red-tailed Hawks (Buteo jamaicensis), Turkey Vultures (Cathartes aura), and Black Vultures (Coragyps atratus) with Aircraft: Implications for Bird Strike Reduction

Comparative Hematology and Plasma Biochemistry of Redtailed Hawks and American Kestrels Wintering in California

A•STRACT.--In December and January of the winters of 1990-91, 1991-92, and 1992-93, blood samples were collected from 52 Red-railed Hawks (Buteojamaicensis) and 91 American Kestrels (b•lco sparverius). Twenty-five blood parameters were measured, including white blood cell components, plasma enzyme activities, and plasma chemistry concentrations. Interspecific comparisons were made to identify s...