Variation in selected hematological parameters of captive red-tailed hawks.

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Abstract

Diurnal and winter variations of four hematological parameters were examined in 10 red-tailed hawks (Buteo jamaicensis). The mean values obtained were: 39.4% packed cell volume (PCV); 2.45 X 10(6) erythrocytes (RBC) per mm3 of blood; 5.73 mg of calcium and 1.44 mg of magnesium per 100 ml of plasma. Only the PCV and RBC count showed significant diurnal variation. When the birds were sampled at a set time of day, from November through to February, no significant changes were detected in any of the four parameters. Variation among the birds in RBC count, PCV and calcium concentration was significant on a diurnal basis but over the four month period only the PCV varied significantly.

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Rehder, N. B., Bird, D. M., Laguë, P. C., & Mackay, C. (1982). Variation in selected hematological parameters of captive red-tailed hawks. Journal of Wildlife Diseases, 18(1), 105–109. https://doi.org/10.7589/0090-3558-18.1.105

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