Retrospective Study of Raptors Treated at the Southeastern Raptor Center in Auburn, Alabama
Raptor rehabilitation programs allow thousands of raptors to be released back into the wild each year that otherwise would have perished without medical treatment. Although species-specific and age-specific results from research conducted across the nation vary greatly, there is a general consensus that raptor rehabilitation is an important part of raptor conservation. We investigated differences in diagnoses and treatment outcomes, along with survival and release rates for 1225 individuals of 17 species admitted between 2010 and 2014 to the Southeastern Raptor Center (SRC), a raptor rehabilitation center in the southeastern United States, to identify trends related to age, species, and activity type (diurnal vs. nocturnal). Adult nocturnal raptors were admitted more frequently than young birds, but we found the opposite trend for diurnal raptors. Young diurnal raptors had higher release rates than adults, likely due to their less-severe injuries. Nocturnal species were more often involved in vehicle collisions than diurnal raptors and were admitted most commonly for head trauma. Diurnal birds were more frequently shot than nocturnal raptors, but were treated most often for fractures, body trauma, and other injuries and illnesses. The SRC had an overall raptor release rate of 38%, which is higher than that of many other rehabilitation centers, and a survival rate of 42%. These results, based on a large number of individuals and a wide diversity of raptor species, may be helpful for informing and improving raptor rehabilitation efforts in the region. Los programas de rehabilitación de rapaces permiten la liberación de miles de aves cada año, las cuales, de otra manera, hubieran muerto sin tratamiento médico. Aunque los resultados de los estudios sobre especies y edades particulares a lo largo de la nación varían notablemente, existe un consenso generalizado de que la rehabilitación de rapaces es una parte importan de la conservación de este tipo de aves. Investigamos diferencias en los resultados de diagnósticos y tratamientos, como también en las tasas de supervivencia y liberación de 1225 individuos de 17 especies ingresados entre 2010 y 2014 al Centro de Rapaces del Sureste (CRS), un centro de rehabilitación de rapaces en el sureste de los Estados Unidos, para identificar patrones relacionados con la edad, la especie y el tipo de actividad (diurna versus nocturna). Las rapaces nocturnas adultas fueron ingresadas con mayor frecuencia que las aves juveniles, pero encontramos el patrón opuesto para las rapaces diurnas. Las rapaces juveniles diurnas tuvieron tasas de liberación mayores que los adultos, probablemente debido a que sus heridas fueron menos severas. Las especies nocturnas estuvieron involucradas con mayor frecuencia en colisiones con vehículos que las rapaces diurnas y fueron ingresadas con mayor frecuencia con traumas craneocefálico. Las aves diurnas sufrieron disparos con mayor frecuencia que las rapaces nocturnas, pero fueron tratadas con mayor frecuencia por fracturas, traumas corporales y otras lesiones y enfermedades. El CRS tuvo una tasa de liberación general del 38%, mayor a cualquier otro centro de rehabilitación, y una tasa de supervivencia del 42%. Estos resultados, basados en un número elevado de individuos y una amplia diversidad de especies de aves rapaces, puede ser útil para informar y mejorar los esfuerzos de rehabilitación de rapaces en la región. [Traducción del equipo editorial]Abstract
Resumen

The number of nocturnal and diurnal raptors with different diagnoses for birds admitted to the Southeastern Raptor Center from 2010–2014. Significant differences based on results of chi-square tests of homogeneity with Yates corrections are indicated with the symbols above the bars (* = P < 0.001, Bonferroni-corrected α = 0.010).

The number of young and adult raptors admitted to the Southeastern Raptor Center within each treatment outcome category plotted for (A) all species combined. Results of chi-square tests of homogeneity with Yates corrections are shown for (B) nocturnal species and (C) diurnal species analyzed separately. Significant differences are indicated with the symbols above the bars (* = P < 0.001, Bonferroni-corrected α = 0.006).

The number of raptors with final treatment outcomes within each diagnosis category with all raptors combined. Significant differences based on results of chi-square tests of homogeneity are indicated with the symbols above the bars (* = P < 0.001, Bonferroni-corrected α = 0.010).

The number of diurnal and nocturnal raptors admitted to the Southeastern Raptor Center for the three most common anthropogenic causes of injury: barbed-wire-fence injuries (BWF), gunshot wounds (GSW), and hit-by-vehicle injuries (HBV). Significant differences based on results of chi-square tests of homogeneity with Yates corrections are indicated with the symbols above the bars (* = P < 0.001, † = P < 0.015, Bonferroni-corrected α = 0.017).
Contributor Notes
Associate Editor: Ian G. Warkentin