nWestern
population winters from s BC through WA and OR to CA, coastal lowlands
of nw Mexico, sw AZ, se CO, s NM and Chihuahua and s on central
plateau of Mexico to c Jalisco.
nMidcontinent
population winters from se NE s through e KS, e OK and e TX;
east through s-c IA, c IL, s through w KT, w TN and w
AL to Gulf coast, LA and TX s to n Tamaulipas.
nHighest
densities along Missouri River and LA and TX Gulf coast.