At head of title: "I don't give a hoot ..."

Cover title.

Seven maps and four tables in pocket.

Errata slip tipped in.

Attached reprint of a summary of the thesis published in the Universiteit van Amsterdam Zoologisch Museum Bulletin, v. 9, no. 7, 1982 under title: Description of Twenty-four New Subspecies of American Otus (Aves, Strigidae) by Gerrit P. Hekstra.

Birds > North America.

Birds > South America.