Colias Sareptensis News Today : Breaking News, Live Updates & Top Stories | Vimarsana

Light in florida and texas than new england. we call them accidentals. in the old days, you would see perhaps one or two fiery skippers, and now you see dozens. reporter: the shift of southern butterflies to the increasingly warmer north is detailed in the journal nature. harvard professor greg breed is the study s lead scientist. we see the species that are more adapted to warmer clients are increasing, and species that are adapting to colder climates are decreasing. it seems sensible to infer that this is some climate driven pattern. reporter: is it climate change? that would be the most logical inference. reporter: the study is built on the work of citizen scientists. all members of the massachusetts butterfly club, and the 20,000 sightings they ve noted over a period of 19 years. the data includes tom ganion s notes. so how do you keep your records? how do you know what s been here? i have a running log right here that i keep. reporter: other club members add their ....

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