Integrative Organismal Biology Lab- An Odyssey of Strange Mice

Welcome. We are a group of organismal biologists exploring the interface of the inner & outer worlds of animals—where von Uexküll’s Umwelt meets Grinnell’s ecological niche. We integrate data from brains, behavior, physiology, & ecology to explore the organism from different perspectives. Current projects focus on how species interactions influence acoustic communication systems in rodents, a group of animals with underappreciated voices.

General topics of interest: Acoustic communication, behavioral endocrinology, cognitive ecology, mammalogy, Mexican borderlands, niche differentiation, species interactions


Clockwise from top left: Leonhard Stejneger, Frank Hall Knowlton, Vernon Bailey, C. Hart Merriam, and Florence Merriam Bailey (Smithsonian Institution Archives) “I reached Flagstaff July 26, 1889, & was joined next day by my assistant, Mr. Vernon Bailey. We proceeded to Little Spring, at the north base of the San Francisco Mountain. This was our base camp for two months, & from it numerous side-trips were made into the surrounding country.” -C. Hart Merriam, 1890


Calling male Southern grasshopper mouse (Onychomys torridus) “A long, fine, shrill whistle in a high key, insectlike in fineness & quality. It is the wolf’s howl in miniature, without rise or fall, & is made with raised nose and open mouth in perfect wolf form.” -Vernon Bailey, 1929












…reaching Flagstaff in Jan 2016


Bret Pasch
Assistant Professor
Department of Biological Sciences 
Northern Arizona University
Flagstaff, AZ 86011