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Map of
North America
from page 204
of Sibley
Guide to Bird Life and Behavior.
2001. p. 204.
Image below of a pair of
green-wing teals from wikipedia.org.
Map of migration of Swainson’s
Hawk from 223 of Sibley Guide to Bird Life and Behavior. 2001. p. 223.
Swainson’s Hawk image from
Wikipedia.org.
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