Tolerance of human disturbance by urban magpie-larks

Kim Kitchen, Alan Lill, Megan Price

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25 Citations (Scopus)

Abstract

To successfully colonise cities, birds must be highly tolerant of human traffic. We examined this tolerance in a native urban coloniser, the Magpie-lark Grallina cyanoleuca, in suburban Melbourne, Victoria. We compared flushing behaviour and the Flight Initiation Distance (FID) of urban and rural individuals, and of urban individuals encountered near to and farther away from roads and pathways carrying vehicular and pedestrian traffic. Mean FID to a researcher was 12 plus or minus 1m in Melbourne, compared with 35 plus or minus 3m in rural Victoria. Rural birds also flushed more by flying (100 versus 57.6 ) and fled farther than urban individuals. Mean FID to a researcher was 1.9 times larger farther from (13 plus or minus 2m) than near to (7 plus or minus 0.6m) urban roads, but time allocations to vigilance (24.1 ) and foraging (65.5-69.4 ) and the percentage of birds that flushed (86 and 75 ) were similar in the two locations. People caused more of the flushing of Magpie-larks near to (55 ) than farther from (20 ) urban roads and pedestrian pathways. We speculate that the disparities in flushing behaviour (urban/rural and near to/farther from urban roads) probably resulted mainly from habituation, a learning process that could be critical in facilitating urban colonisation and use of habitat near busy urban traffic corridors by members of temperamentally inherently bold species.
Original languageEnglish
Pages (from-to)1 - 9
Number of pages9
JournalAustralian Field Ornithology
Volume27
Issue number1
Publication statusPublished - 2010

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