Closures used to be 0 days, the 12 days, then 30, then 50, then 70. We now get 3 weeks a year in the summer based on a technicality of least terns being protected. There's millions of least terns and they're a "species of special concern" only in Massachusetts.
https://www.audubon.org/news/-interior-least-terns-comeback-model-conservation-success
We all love the birds. No one is saying we want to have a Baja 1000 race down duxbury beach. We all want to protect the dunes. Our money for stickers pay for coastal erosion mitigation.