The Exxon Valdez spill killed (from my quick search) an estimated 200,000 to 300,000 birds, about what this would kill in 10 years or so at mid-20k birds killed per year. So, build 10 of these plants (or larger with even more roasting capacity) and you have the equivalent (in bird deaths) of an Exxon Valdez oil spill each year. A wise sage once said "It's not easy being green."
The Exxon Valdez is something which should not have happened at all. Whereas this is a consequence of "normal operation".
This kind of thinking works out so well with nuclear.