Fill in the Blanks Gap Fill ExercisesOnline version ....... by Tea Cher 1 summer UnitedStates trip insects Mexico spring milkweed butterflies Canada picky NorthAmerica Monarchs are easy to spot . The have a bright orange - and - black pattern , and flutter across much of . But in recent years , people have been seeing fewer and fewer monarchs . In the of 2022 , the butterflies became officially endangered . One factor making monarchs' lives hard is that they're eaters . Monarch caterpillars only feed on plants . The also make incredibly long migrations . Every , they travel north from to the and . This takes the butterflies a few generations .