Accipitriformes.

(A) Accipiter cooperii placement of the trachea and esophagus are on the left side of the neck. (B) radiograph of A. cooperii also showing the trachea on the left. (C) Buteo jamaicensis ventral view showing a more typical right lateralization. (D) Buteo platypterus ventral view displaying a midsagittal position of the trachea. The trachea is also twisted nearly 180°. Tra = trachea; Eso = esophagus.