Aonce-in-a-lifetime celestial event will envelope the Adirondacks in darkness on April 8. Now’s a good time to ponder endogenous biological clocks and how birds might react to their world suddenly seeming like night in mid-afternoon. Scientists are particularly interested in this total solar eclipse since it will occur during early spring bird migration. MORE ON THE ECLIPSE
Circadian rhythm is the 24-hour internal clock that regulates behavior for plants, animals, fungi
