Urban monarchs formed isolated populations with limited impact on migratory butterflies, suggesting city habitats can support ...

PHOENIX — The number of western monarch butterflies is declining alarmingly, which prompted a push to add the butterfly to the endangered species list in 2014. But after four years of review ...

The monarch butterfly is Illinois' state insect and has held that distinction for 50 years — having been suggested for the ...

Monarch butterflies are famous for their annual migrations, but not all migrate. In recent years, more and more monarchs have ...

To survive a drop in temperatures over winter, monarch butterflies go into diapause – often called overwintering or ...

Monarch butterflies are the only butterfly species known to make a two-way migration, traveling both north and south each ...

Monarch butterflies are famous for their annual migrations, but not all migrate. In recent years, more and more monarchs have ...