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Primerjava različnih sredstev za odvračanje sive vrane (Corvus cornix) z obdelovalnih površin
ID Pirc, Tim (Author), ID Jerina, Klemen (Mentor) More about this mentor... This link opens in a new window

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Abstract
Siva vrana (Corvus cornix) je ena pogostejših ptičjih vrst tako na podeželju kot v mestih. So vsejede, zaradi visoke inteligence so zmožne priti do hrane, do katere druge vrste ne morejo. Kljub rednem poseganju med vrane z odstrelom, s katerim se skuša nižati njihovo številčnost oz. lokalne gostote, vrane povzročajo škodo v mestih in na podeželju. Ljudje se za odvračanje poslužujejo različnih tehnik od postavljanja ptičjih strašil do uporabe pirotehnike. Ena izmed metod, ki se je uporabljala v preteklosti in je v uporabi še danes, je obešanje kadavrov vran na kole. Ta metoda lahko na izpostavljenih krajih povzroči negativne odzive javnosti. Med pregledovanjem virov nismo odkrili nobenih, ki bi opisovali učinkovitost in uspešnost te metode. V našem poskusu smo primerjali uspešnost treh metod odvračanja (z maketo vrane, maketo kanje, kadavrom vrane) in jih primerjali s kontrolo (brez ukrepa). Odvračalni poskus smo opravili na deponiji odpadkov mesta Ljubljana. Učinke smo spremljali s fotopastmi. Uspešna sta bili metodi z maketo kanje in kadavrom vrane, pri katerih je bilo znatno manj prisotnih sivih vran kot pri metodi z maketo vrane, ki je delovala bolj privabljalno kot odvračalno.

Language:Slovenian
Keywords:siva vrana, Corvus cornix, odvračanje, kadavri vran, makete ptic
Work type:Bachelor thesis/paper
Organization:BF - Biotechnical Faculty
Year:2018
PID:20.500.12556/RUL-103254 This link opens in a new window
COBISS.SI-ID:5182886 This link opens in a new window
Publication date in RUL:15.09.2018
Views:16031
Downloads:453
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Secondary language

Language:English
Title:Comparison of the various means of deterring gray crows (Corvus cornix) of arable land
Abstract:
Hooded crows (Corvus cornix) are one of the most common bird species both in rural and in urban areas. They are omnivores and because of the high intelligence, they are able to get food which other species cannot reach. Despite regular intervention by hunting which tries to reduce their abundance or local density, crows cause damage in cities and in the countryside. People use different techniques for deterring crows, e.g. with the use of pyrotechnics and placing bird scarecrows. One of the methods used in the past and still in use today is hanging up the crow cadavers on posts. However, this method can lead to negative public reactions in exposed places. In literature review we did not find any source which describes the efficiency and effectiveness of this method. In our experiment, we compared the performance of three methods of deterrence (with a crow’s model, a model of a buzzard, and a crow cadaver) and compared them with control situation (without a measure). A deterring test was carried out at the Ljubljana landfill site. We monitored the effects with camera traps. Successful were the methods of implementing the buzzard model and the crow cadaver, which significantly reduced the presence of crows in comparison with the method of the crow model, which was for crows more attractive than dissuasive.

Keywords:Hooded crow, Corvus cornix, scaring, crows' carcasses, models of birds

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