The Atacama Myotis is an endangered and poorly studied bat species, endemic from Peru and Chile. Using mist nets and ultrasonic recordings we release new information on activity patterns and roost use by M. atacamensis in Chile. We also report new records for the species, extending its distribution range to Santiago Metropolitan region. Our results suggest a wide distribution and relative abundance of M. atacamensis in northern Chile, in addition to remarkable habitat diversity for populations of this species. Bats were active in both natural and anthropogenic habitats. Abandoned mines and buildings in rural villages were the roosts most used by the species. These data provide additional information on the distribution, ecology, and natural history of M. atacamensis and can be useful in the design of conservation action plans for populations in the country.

阿塔卡马鼠（Atacama Myotis）是一种濒临灭绝且研究不佳的蝙蝠，来自秘鲁和智利。通过使用薄雾网和超声波记录，我们发布了智利智利山毛榉的活动模式和栖息地使用的新信息。我们还报告了该物种的新记录，将其分布范围扩展至圣地亚哥首都大区。我们的研究结果表明，智利北部的atacamensis分布较广，相对丰富，此外该种群的生境也很丰富。蝙蝠在自然和人为的栖息地中都很活跃。乡村中废弃的矿山和建筑物是该物种最常使用的栖息地。这些数据提供了有关沙棘的分布，生态和自然历史的更多信息。atacamensis，可用于设计该国人口的保护行动计划。