For two weeks, I have written about Aristotle and his scientifically outrageous notion that birds hibernate. He was wrong about the five species of swallows that he knew in his Greek homeland. They do ...

Called holchko, or “sleeping one,” by the Hopi, poorwills have the startling ability to cut their oxygen use by 97% and survive through the winter on just 10 grams of stored fat. Though known to the ...

The trip starts with a bang. A Common Poorwill, a bark-colored bird the size of your palm, jumps up from the narrow blacktop and sputters head-on into our pickup’s undercarriage. Lee Hoy, a wildlife ...