Habitat In Northern Ireland, feeding occurs in riparian habitats, both broadleaf and mixed woodland and parkland. Occasionally found in farmland but always near water. In southwest England found over lakes and rivers (Vaughan et al., 1997). In Germany, hunts in wet deciduous woodland and over farmed land (Jüdes, 1987) and in the Netherlands, hunts mainly above water, but is also seen in woodlands and along lines of trees in agricultural areas (Kapteyn, 1993; 1995). Flight speed averages 23 km/h ranging from 4.4 km/k to 8.3 km/h (Baagøe, 1987).
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Roosts Known maternity roosts are located in brick buildings in cavity walls or under slates. In both summer and winter, individuals are found in cracks in brickwork, under soffit boards, fissures in rocks and tree hollows, but more often recovered as grounded individuals.
Diet Mainly feeds on aquatic Diptera ( Vaughan, 1997). Remains of Chironomidae were found in 100% of pellets examined (Beck, 1994-1995). There is no evidence of gleaning.
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