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Keywords from Image Description:
Tyrannus couchiiAQBIPCA. Couch's Kingbird Tyrannus couchii right and Empidonax obscurus left now Gray Flycatcher Empidonax wrightii bsceoc org jsp source aou version AOU version AOU ref handcolored lithograph Report on the United States and Mexican boundary survey made under the direction of the secretary of the Interior by William