Abstract
Railway-facilitated dispersal of the Spanish Sparrow (Passer hispaniolensis) during its current range expansion in the Pannonian Basin
Highlights
Children’s story books rarely provide a starting point for research
Within the study period and area as outlined above, the data set refers to 23 Red-rumped Swallow, 7 Spanish Sparrow, and 1 Italian Sparrow individuals (Table 1)
Several observers verified that a pair of Spanish Sparrows bred in Southern Hungary, in 2014–2015 (Hadarics 2015)
Summary
Children’s story books rarely provide a starting point for research. the tale on the “richest sparrow of the world” (Miler and Petiska 1963) prompts the question whether sparrows may get accidentally trapped into goods wagons and, utilize freight train traffic for their spatial dispersion. Exhibited a much quicker range expansion in Mexico (Wagner 1959), North-America (Robbins 1973), Siberia (Summers-Smith 1988), and Africa (Schrey et al 2014), especially along railway lines. Based on these observations and anecdotal evidence, several authors (Robbins 1973; Summers-Smith 1988; Schrey et al 2014) suggested that sparrows may utilize cargo trains for their long-distance spatial dispersion. The purpose of this study is to develop this idea into a testable hypothesis and find support for or against it using formerly published data
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