In Midwest, Monarch Butterflies' Flutters May Be Far Fewer - The New York Times
Worries grow following 'dramatic' drop in monarch butterfly population
Monarch butterfly populations may be more stable than previously thought
Monarch butterfly population at all-time low, new report says
Monarch Numbers Up Slightly, But Butterfly Still at Risk of Extinction
Climate Change Responsible for Recent Decline of Eastern Monarch Butterflies - Yale E360
Are Monarch Butterflies Endangered? - Birds and Blooms
Eastern Monarch Butterfly Population Up Slightly, Still Below Extinction Threshold - Center for Biological Diversity
Eastern monarch butterfly population plunges below extinction threshold
Eastern Monarch Butterfly Population Hints at Recovery
After Thanksgiving Count, Western Monarch Near Extinction - Bay Nature
Monarch butterfly population moves closer to extinction