Highlights Birds did not pay special attention to oncoming trams, probably because trams are easily detected. More birds were recorded farther from a tram stop during winter. In the case of hooded crow and magpie, abundances were greater where the track geometry was more complex but this was observed only in winter. The tram infrastructure is widely used by urban bird species which mainly forage there. Trams do not appear to be dangerous vehicles for birds, especially in comparison to trains or cars, and at least from this point of view, this type of transport system can be recommended as environmentally friendly.

    Abstract Transport infrastructures, mainly roads and railways, influence many aspects of bird life. The use of trams in urban areas for mass transit has been suggested as having a lower impact on the environment. However, to date, the impact of tram tracks and the surrounding infrastructure on birds has not been directly tested. Therefore, we posed two questions during a study of tramways in Poznań (western Poland): (1) which bird species use tram tracks and their infrastructure; and (2) how does their behaviour respond to moving trams. Tram tracks were recorded as used by 11 species, with four corvids (jackdaw Corvus monedula, rook Corvus frugilegus, magpie Pica pica and hooded crow Corvus cornix) totalling 66% of records and feral pigeon Columba livia contributing a further 24%. Species showed different usage patterns of the tram infrastructure. In the case of rook during winter, significantly more birds were observed further from a tram stop. In summer, a higher density of jackdaws occurred where track surroundings were vegetated, and both hooded crows in winter and magpies in winter were more abundant where track geometry was more complex. During our field work only two dead birds on tram tracks were observed. The results of this study, and a literature survey of other transport options, suggest that tram tracks are not very dangerous for birds, and at least from this point of view, can be recommended as an environmentally friendly transport system in urban areas.


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    Title :

    Birds using tram tracks in Poznań (Poland): Species, infrastructure use and behaviour


    Contributors:


    Publication date :

    2020-01-01




    Type of media :

    Article (Journal)


    Type of material :

    Electronic Resource


    Language :

    English





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