A bat whose dark brown fur has white tips, giving it a frosted appearance.
Many hairs have pale ends that create a mottled effect over its dark coat.
At a highway bridge in northeast China, Asian parti-colored bats did not all leave at the same point in the evening. Researchers recorded 140 first-emergence events from 2019 to 2021. During lactation, 44 of 67 events (65.67%) began before sunset; after lactation, only 5 of 73 (6.85%) did. The authors linked earlier departures to the greater energy demands of raising young.
The midpoint of the departing group came earlier while Amur falcons were actively hunting, whereas the last bats returned later when predators were present near dawn. Light level mattered too, but it did not affect every stage in the same way. Breeding stage, twilight and predator activity combined to shape a nightly rhythm that began in the crevices of one shared bridge roost.
An extinction-risk assessment has not been added yet.
At one highway bridge in Heilongjiang, northeast China, bats used crevices in 14 arches as a summer nursery roost. Researchers counted bats in three arches in August 2020, estimated an average of about 450 per arch, and extrapolated roughly 6,300 for the whole bridge. The estimate was not a direct count of every arch. The colony arrived around mid-June and left by the end of September. Amur falcons were observed catching bats near the roost in mid-August 2018. These are dated, site-specific observations, not a current range-wide population estimate. A current formal global conservation category and assessment date were not identified in the reviewed sources.