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Fig. 3 | BMC Ecology

Fig. 3

From: Cold spell en route delays spring arrival and decreases apparent survival in a long-distance migratory songbird

Fig. 3

[Temperature data available from the U.S. Geological Survey (; wind data available from National Oceanic and Atmospheric Administration ( Maps were created in ArcMap 10.1 (]

Average land surface temperature (background map) and wind patterns at 850 kPa pressure level (small arrows) during semi-collared flycatcher spring migration from 10 February to 7 April in a 2014 and b 2015. Black shape outlines semi-collared flycatcher non-breeding range (BirdLife International and NatureServe 2011) and large arrows indicate spring migration routes

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