Monarch butterflies are fluttering ... the second-smallest area occupied by monarch butterfly colonies in Mexico since 1993, when population monitoring began. Only 2013-2014, when scientists ...

There are a lot fewer monarch butterflies in Arizona than there used to be a few decades ago. FOX 10's Steve Nielsen is ...

pacific Grove Museum of Natural History is out doing its annual monarch butterfly count ... is to understand what's happening with the population overall every year. Western monarchs are counted ...

Arizona's monarch butterfly population has significantly declined over recent decades. FOX 10's Steve Nielsen reports on how Scottsdale is working to reverse the trend and how the public can help.

They need us because if we don’t act now to save them, monarch migrations will collapse and that would be morally unforgivable,” said Tierra Curry, a senior scientist at the Center for Biological ...

Data from a recent study she participated in show a decline in monarch butterfly numbers. Oberhauser said 30 years of reliable population data support this species’ trending decline. From this ...

World Wildlife Fund Mexico and its partners have reported a doubling of the eastern monarch population. The tally is not made by counting each individual butterfly. Instead, butterfly counters ...

And this year’s migration brings somewhat good news: the population has doubled since ... The peak of the spring monarch butterfly migration in Texas typically occurs from late March to early ...

AUSTIN, Texas — The eastern monarch butterfly population is growing, and Texas Agriculture Commissioner Sid Miller says that's thanks to conservation efforts. According to the latest survey ...