References:
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*Annual migration density and stopover patterns of Northern Saw-whet Owls (Aegolius acadicus) Auk,The, Oct 2002 by Whalen, David M, Watts, Bryan D
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*Daily Email Updates from Scott Weidensaul
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*Reports on SawWhetNet listserve
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*Atlas of Bird Migration – Tracing the Great Journeys of the Worlds’ Birds – General Editor Jonathan Elphick
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*Living On The Wind, Scott Weidensaul