By TERRI LIKENS
When it comes to determining the potential harm from TVA’s 2008 ash spill, scientists are turning to the birds.
Tree swallows, to be precise.
Why tree swallows?
Neil Carriker, who is overseeing the TVA study, says the birds’ feeding and territorial habits make it an ideal subject.
Based on its diet of primarily insects, he sees it as sort of large-mouth bass with wings.
But unlike the bass, the tree swallow doesn’t go far from its nesting box during breeding season.