A hematologic survey of captive waterfowl
Hematologic parameters were studied in giant Canada geese ( Branta canadensis maxima ), mallard ducks ( Anas platyrhynchos platyrhynchos ) and various species of diving ducks at seasonal intervals throughout the year. Highest values for packed cell volume, hemoglobin content and erythrocyte counts were found in the winter and pre-nesting periods. Mean corpuscular volume and mean corpuscular hemoglobin varied inversely with these values.
Journal of Wildlife Diseases↗