Fulvous harvest mouse holds a solid mid-tier record in Arizona, a grassland specialist of the state’s southeastern plains that builds distinctive woven-grass nests low in dense vegetation. Its occasional-tier ranking is a reasonable showing for a small, secretive rodent that survey trapping documents far better than casual sightings do.
The record spikes in March and May, tapers through summer, then rises again in October and November, a pattern more likely tied to grassland trapping-survey timing and seasonal vegetation cover than a true two-peak population cycle.
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