One of the most unique behaviours of the Azores noctule is its frequent habit of flying during the daytime, which is unusual among bats (7). It is, however, most active at night, emerging from its daytime roosts in groups to forage (7). It is often seen feeding on insects around artificial lighting (1).
In spite of popular misconception, bats are not actually blind, with many species having extremely good vision (4). Many species, including the Azores noctule, also use echolocation, emitting high frequency sounds in order to detect prey and create a mental map of their environment (4).
Although there is little information on the reproductive behaviour of the Azores noctule, maternity roosts of this species have been found in buildings, trees and rock crevices (1). The Azores noctule has a gestation period of 70 to 75 days and only a single litter is produced each year (5). Members of the genus Nyctalus generally give birth to one or two young, and the young bats are usually cared for by the female (4) (5).