United States

Life histories of North American cardinals, grosbeaks, buntings, towhees, finches, sparrows, and allies. Order Passeriformes : family Fringillidae

A study of the crested tinamous of Argentina

A study of the spotted tinamous and the pale spotted tinamous of Argentina

Toxicity of lead and proposed substitute shot to mallards

American peregrine falcon and Arctic peregrine falcon

Herons of the United States

The trumpeter swan : its history, habits and population in the United States

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