Pinyon mouse tracks Arizona’s pinyon-juniper woodland closely, with records reaching from Petrified Forest National Park in the east to Grand Canyon-Parashant National Monument in the northwest, and Yavapai and Coconino counties holding the most. Its occasional-tier ranking is a fair showing for a small nocturnal mouse in a habitat that covers a large share of the state’s middle elevations.
Records build through spring to a peak of 60 in May, hold between 21 and 35 a month through summer, then fall off sharply by fall, a pattern that likely tracks when trapping crews are in the field more than any true seasonal surge.
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