| Nathusius’
pipistrelle (Pipistrellus
nathusii)
Weighing only 6 to 8 g, Nathusius’
pipistrelle (together with the common pipistrelle) is
one of the smallest bat species. All the more remarkable is its flight
performance during the twice-yearly migration, similar to that of the
noctule and Leisler’s bat. The
animals regularly cover distances of 1,000 km or more, the farthest
distance of 1,900 km having been documented between Latvia and southern
France. During migration Nathusius’ pipistrelles can be found in
considerable numbers in riverine
forests. |
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These forests play an important role in April/May and August/September as roost sites and feeding grounds, for this as well as for other species. Similarly, the maternity colonies in the northern and northeastern parts of Germany are located in forests close to water. Tree holes, hollow branches, crevices, cracks in tree trunks, and loose bark are typical roosts. In winter small groups gather together in trees for hibernation. | |