<P> Starting in September and October , eastern and northeastern populations migrate from southern Canada and the United States to overwintering sites in central Mexico where they arrive around November . They start the return trip in March , arriving around July . No individual butterfly completes the entire round trip ; female monarchs lay eggs for the next generation during the northward migration and at least four generations are involved in the annual cycle . </P>
<P> Starting in September and October , eastern and northeastern populations migrate from southern Canada and the United States to overwintering sites in central Mexico where they arrive around November . They start the return trip in March , arriving around July . No individual butterfly completes the entire round trip ; female monarchs lay eggs for the next generation during the northward migration and at least four generations are involved in the annual cycle . </P>
where does the monarch butterfly go in the winter
where does the monarch butterfly go in the winter
central Mexico
central Mexico