PARIS: MONTPELIERA biologist with the Vermont Fish & Wildlife Department says the state may play an important role in the conservation of monarch butterflies, which are declining around the country.
Biologist Mark Ferguson says Vermont’s meadows and old fields provide habitat for milkweed, a critical food source for monarchs. He says in contrast, increasing herbicide use in large-scale agriculture in the midwest appears to have greatly reduced the abundance of milkweed in that part of the country.
Monarchs lay eggs on milkweed and the caterpillars feed on the plant.
The department says most eastern monarchs spend the winter at a particular site in the mountains of central Mexico. Ferguson says as monarchs migrate north, they need to reproduce several times and need milkweed at each site to do that.
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