Glaucidium brasilianum cactorumis is an endangered subspecies of the Ferruginous Pygmy Owl. This little guy is only about 6 inches (165mm) tall, weighing in at 2 ounces (57 gm), yet he's been known to take birds as large as a Mourning Dove (Zenaidura macruora). His primary diet is reptiles, with an admixture of birds and insects. He's endangered due to loss of habitat in Arizona, mostly because of over development of his home range for human housing. If you are in Southern Arizona and you hear this guy's monotonous tooting (he can sometimes start at midnight and continue, virtually nonstop, until 8am and will sometimes toot more than 100 toots in a row, for months!) please call the Arizona State Game and Fish Commission or drop me a note.
To cite this page:
Myers, P., R. Espinosa, C. S. Parr, T. Jones, G. S. Hammond, and T. A. Dewey. 2020. The Animal Diversity Web (online). Accessed at https://animaldiversity.org.
The Animal Diversity Web is an educational resource written largely by and for college students. ADW doesn't cover all species in the world, nor does it include all the latest scientific information about organisms we describe. Though we edit our accounts for accuracy, we cannot guarantee all information in those accounts. While ADW staff and contributors provide references to books and websites that we believe are reputable, we cannot necessarily endorse the contents of references beyond our control.
This material is based upon work supported by the
National Science Foundation
Grants DRL 0089283, DRL 0628151, DUE 0633095, DRL 0918590, and DUE 1122742. Additional support has come from the Marisla Foundation, UM College of Literature, Science, and the Arts, Museum of Zoology, and Information and Technology Services.
The ADW Team gratefully acknowledges their support.