Swallows diving into sleep
Every year in Haddam, CT, hundreds of thousands of Tree Swallows gather at sunset to sleep in the reeds. In so doing there perform an aerial display of rhythm and coordination seldom seen anywhere else in nature.
Every year in Haddam, CT, hundreds of thousands of Tree Swallows gather at sunset to sleep in the reeds. In so doing there perform an aerial display of rhythm and coordination seldom seen anywhere else in nature.