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Belorobi netopir (Pipistrellus kuhlii) je razširjen po celi Sloveniji, kjer se večina njegovih znanih zatočišč nahaja v stanovanjskih hišah. V naši nalogi smo analizirali skoraj dve desetletji podatkov (2002–2020), pridobljenih z lovom in spremljanjem izletavanj porodniške kolonije belorobih netopirjev iz dveh zatočišč, za vzhodnim in zahodnim zunanjim lesenim opažem stanovanjske hiše Krašnja 55. Porodniška kolonija se je v opazovanih zatočiščih zadrževala med marcem in oktobrom, ko smo v različnih letih zaznali med 14 in 50 odraslih samic. V tem obdobju netopirji niso bili stalno prisotni v enem zatočišču, ampak so večkrat zamenjali lokacijo zatočišča na hiši, poleti pa so vsaj enkrat popolnoma zapustili obe opazovani zatočišči. Belorobi netopirji so zvečer izleteli iz zatočišč po sončnem zahodu. V oblačnem vremenu so navadno izleteli bolj zgodaj kot v jasnem, kar je bila verjetno posledica tega, da se je v oblačnem vremenu jakost svetlobe hitreje znižala, kar je sprožilo zgodnejše izletavanje. Netopirje smo lovili in obročkali 33-krat, ponovno pa smo ujeli 60 obročkanih samic (32,6 % obročkanih samic) in nobenega obročkanega samca. Najstarejša ponovno ujeta samica je bila stara najmanj 15 let. Z radiotelemetričnim spremljanjem petih samic smo določili njihove prehranjevalne habitate. Netopirje smo najpogosteje zaznali na prehranjevališčih ob svetilkah z dejansko rabo tal pozidano in sorodno zemljišče (56,6 %), temu pa so sledila prehranjevališča na trajnih travnikih ob gozdnem robu (22,3 %) in v gozdu (18,2 %). Pridobljeni podatki nam dajejo boljši vpogled v sezonsko dinamiko, ekologijo in prehranjevalne vzorce te porodniške kolonije. The Kuhl’s Pipistrelle bat (Pipistrellus kuhlii) is widespread throughout Slovenia, where most of the known roosts are located in residential buildings. We analysed nearly two decades of data (2002–2020) obtained by capturing bats and observing the evening emergence of a maternity colony of Kuhl’s Pipistrelle from two roosts located behind the eastern and western outer wooden cladding of the residential house Krašnja 55. The maternity colony stayed in the observed roosts between March and October. Between 14 and 50 adult females were recorded in different years. During this period, the bats did not stay permanently in one roost, but changed the location of the roost several times. During the summer, they all left both observed roosts completely at least once. Kuhl’s Pipistrelle usually emerged from their roost in the evening after sunset. In cloudy weather, they usually emerged earlier than in clear weather, probably due to the lower light levels near the roost, which triggered an earlier emergence. Bats were captured and ringed on 33 occasions. Of the ringed bats, no males were recaptured, but we recaptured 60 ringed females (32.6% of ringed females), of which the oldest recaptured female was at least 15 years old. Radiotelemetry was used to determine the foraging habitats of five females. Bats were most frequently found at feeding sites near lamps (56.6%), followed by feeding sites on permanent meadows at the edge of the forest (22.3%) and in the forest (18.2%). The obtained data gives us a better insight into the seasonal dynamics, ecology and feeding patterns of this maternity colony. |
