The Common Noctule is the largest type in Britain of what creature?
Common noctule up to 50 km/h. Common noctule bats mainly eat beetles, moths and winged ants. The common noctule uses two main calls for echolocation. The frequencies of the first are 26–47 kHz, have most energy at 27 kHz and an average duration of 11.5ms. The frequency of the second call is 22–33 kHz, having most energy at 22 kHz and an average duration of 13.8ms. Small to medium-sized woodlands are preferred but they may forage up to 20 km from the woodland at night. When roosting through the day, the noctule bat usually seeks out tree holes or even bat boxes
Common noctule prey, they have short daily activity periods before sunrise and after sunset of in total 1 h or less and must cope with up to 23 h of fasting a day. The common noctule is a migrating species with female bias: the males do not migrate. Mating season is in late summer in the wintering areas and the females store the sperm in the uterus during hibernation until fertilization in spring. During early pregnancy in late April the females migrate North, as far as the Baltic region for the Europe continent, to return to their natal maternity colonies and give