Cajamarca Oldfield Mouse

Common Name: Cajamarca Oldfield Mouse
Scientific Name: Abrothrix californica

Habitat: The Cajamarca Oldfield Mouse, a small rodent species, primarily inhabits the high-altitude regions of the Cajamarca province in northern Peru. These mice are often found in scrub forests and grasslands, where they prefer areas with dense vegetation that provides ample cover against predators. Their habitat typically includes altitudes between 2,500 to 3,500 meters, showcasing the species’ adaptability to mountainous environments.

Physical Characteristics: The Cajamarca Oldfield Mouse is characterized by its moderate size, measuring approximately 10 to 15 cm in body length, excluding the tail. Its fur tends to be a mix of light brown and gray, providing excellent camouflage against the rocky and grassy terrains it inhabits. Distinctive features include large ears and a long, scaly tail that is often as long as its body, aiding in balance while navigating its environment.

Behavior: This mouse is primarily nocturnal, exhibiting a variety of behaviors typical of small rodents. They are known for their agility and quick movements, making them adept at escaping from potential threats. Cajamarca Oldfield Mice are social animals, often found in small groups, and are territorial, marking their domain with scent. Their burrowing habits contribute to the aeration of the soil and promote plant growth in their environment.

Diet: The diet of the Cajamarca Oldfield Mouse is largely herbivorous, consisting mainly of seeds, fruits, and green vegetation. They are particularly fond of grasses and grains, which are abundant in their native habitat. Their feeding habits play a critical role in seed dispersion, thus supporting the growth of various plant species in their ecosystem.

Reproduction: The Cajamarca Oldfield Mouse has a breeding season that typically coincides with the wetter months, enhancing the availability of food resources for the young. A female can give birth to a litter of 3 to 6 pups after a gestation period of about 22 days. The pups are born altricial, meaning they are born hairless and blind, requiring continuous care from the mother until they mature enough to explore their surroundings.

Conservation Status: Currently, the Cajamarca Oldfield Mouse is classified as vulnerable, with habitat loss due to agricultural expansion and development posing significant threats to its survival. Conservation efforts are necessary to protect this species and its high-altitude ecosystem from further degradation.

Interesting Facts: One fascinating aspect of the Cajamarca Oldfield Mouse is its ability to thrive in extreme temperature fluctuations typical of the mountainous regions of Peru. Additionally, they play a crucial role in their habitat’s ecosystem by contributing to soil health through their burrowing activities and seed dispersal practices.

Role in Ecosystem: The Cajamarca Oldfield Mouse serves as both prey and a seed disperser within its ecosystem, highlighting its importance in maintaining ecological balance. As a food source for larger predators, this species is integral to the food web in high-altitude environments of Peru, and its activities support biodiversity in plant communities.