engleski

Monitoring of the arrival time in the barn swallow (Hirundo rustica) population from Mokrice village (Croatia), 1980-2011

This paper shown the results of observed barn swallow Hirundo rustica arrival from wintering in Africa, south of the Sahara, to the nesting area in the village Mokrice (northwestern Croatia). The local barn swallow population was monitored for three decades (1980–2011). Although there have been constant fluctuations in date of spring arrival, there was no significant change in the trend of the arrival time. Spring air temperature (March–April), measured in nearby meteorological station, showed a trend of significant increase of the average temperature by approximately 2.2 °C in the same period.

barn swallow; arrival date; spring temperature; long–term trend

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