The end of summer means back to school, back to the grindstone, back from vacation. And for millions of birds, it means time to fly south for the winter.
One particular type of bird — the purple martin — has spent the summer preparing for that journey under the Causeway bridge. Right where the south shore connects to the Causeway, tens of thousands of the birds have maintained a roost, with a second roost further along the bridge. They sleep under it, flying in right at sunset. The last summer stragglers are now getting ready for their flight south.