<P> The monarchs begin their southern migration September to October . Eastern and northeastern populations , originating in southern Canada and the United States , travel to overwintering sites in central Mexico . They arrive at their roosting sites in November . They remain in their roosts during the winter months and then begin their northern migration in March . No individual butterfly completes the entire round trip . Female monarchs lay eggs for a subsequent generation during the northward migration . Four generations are involved in the annual cycle . </P>
<P> The monarchs begin their southern migration September to October . Eastern and northeastern populations , originating in southern Canada and the United States , travel to overwintering sites in central Mexico . They arrive at their roosting sites in November . They remain in their roosts during the winter months and then begin their northern migration in March . No individual butterfly completes the entire round trip . Female monarchs lay eggs for a subsequent generation during the northward migration . Four generations are involved in the annual cycle . </P>
where do monarch butterflies go in the winter time
where do monarch butterflies go in the winter time
central Mexico
central Mexico