Pasteurellosis in Wild Birds in Massachusetts

Epizootics in wild birds have not received adequate attention, a factor which accounts for our lack of knowledge on the natural distribution of some pathogens. Native birds appear to be an important reservoir of Pasteurella multocida. Sporadic or epizootic outbreaks of pasteurellosis in wild birds have been recorded over the past 30 years. Reports published on the disease involve ruffed grouse Bonasa umbellus (3), California quail Lophortyx californicus (6), mallard Anas platyrhynchos (9), pintail Anas acuta (9), American widgeon Mareca americana (11), canvasback Aytha valisneria (11), shoveler Spatula clypeata (11), great blue heron Ardea herodias (11), whistling swan Olor columbianus (11), Canada goose Branta canadensis (8), green-winged teal Anas carolinensis (8), lesser scaup Aytha affinis (8), ruddy duck Oxyura jamaicensis (8), starling Sturnus vulgaris (1), American coot Fulica americana (10), robin Turdus migratorius (2), common grackle Quiscalus quiscula (2), snow goose Chen hyperborea (12), ring-necked pheasant Phasianus colchicus (12), marsh hawk Circus cyaneus (12), and short-eared owl Asio flammeus (12). This report describes 13 naturally occurring cases of Pasteurella infection identified in the Massachusetts avifauna during a 21/2-year survey (March 9, 1964, to September 8, 1966).