Osprey coming home on the Connecticut River (Photo: Kris Rowe)
by Richard Conniff/Takepart.com
In New England, where I live, this is the time of year when ospreys take their last turn on the waterways before heading south. They’ve mated, reared their young, and seen their fledglings take wing and begin to hunt for themselves. If you are lucky and know your local watering holes, you can still sometimes see them plunging out of the sky and carrying home blood-spangled fish in their talons. It is one of the great spectacles of summer.
The resurgence of ospreys from near extinction in the 1970s to their modern abundance always makes me think with gratitude of Rachel Carson and the demise of DDT as a standard tool of mosquito control in this country. Her book Silent Spring, published in 1962, first alerted Americans to the risky business of spraying the countryside with as much as 80 million pounds of DDT, an untested chemical, in a single year. One effect of DDT, scientists were demonstrating, was the fatal thinning of the eggshells of ospreys, eagles, peregrine falcons, brown pelicans, and other species. The eggs collapsed under the weight of the nesting parent, and generations were lost. As a result, the osprey population in my home territory, the lower Connecticut River Valley, plummeted from 200 nesting pairs to just two by the early 1970s. The same thing happened to ospreys and other species nationwide. Then the Nixon administration banned most uses of DDT in this country, and wildlife slowly began to recover.
This year, though, my gratitude to Carson, and my pleasure in ospreys, is complicated by the political response to the devastating birth defects and deaths from mosquito-borne Zika virus, along with the persistent effects of mosquito-borne West Nile virus, which has killed
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