Green-winged Teal (Anas carolinensis) Science Article 5
abstract
The displays of the European race of the Green-winged Teal (Anas crecca crecca) have been studied intensively (Lorenz, 1953, 1958; Lorenz and von de Wall, 1960; von de Wall 1963) but no detailed description has been published for the North American race (A. c. carolinensis).
McKinney, F, Wilson Bull. 77:112-121