Enjoy nature shows? Then watch the twilight zone.
As the black of night surrenders to the gray of dawn, the nocturnal, diurnal and crepuscular creatures — those most active at night, day, and dusk and dawn, respectively — all share nature's stage.
It's when bats, owls and other night-feeders are still on the hunt but soon will steal away. It's when mate-seeking day feeders — songbirds and ruffed grouse, for example — announce their presence in song and drumbeats. And it is when species most active in low light (deer and bobcat, for example) feed as they avoid being fed upon.
Wildlife-watchers know first light is a special time. So do nature photographers, hunters and others. It is special, in part, because the light is the purest and softest it will be all day.
"God paints amazing pictures at sunrise," said Tom Glines, a longtime waterfowl and turkey hunter from Coon Rapids. "Dawn is actually spiritual for me. When I am in a duck blind on a prairie pothole, I get caught up in the warm glow of first light, and all the noisy commotion in the slough — the ducks, the geese, the swans — well, it makes the moment unforgettable."
Glines so loves first light that it defines who he is. "I have the saying 'Just give me another sunrise' etched into the leather game carrier I use while hunting," he said. "I live to be outdoors when nature wakes up."
So when is morning twilight?
Technically, twilight begins when the sky is no longer completely dark. Scientists say the sun is 18 degrees below the horizon then, which is when the fainter stars begin to disappear. Next comes dawn, when the sun is six degrees below the horizon. Dawn is when the world comes clear. In Minnesota, many hunting seasons start a half-hour before sunrise because animals are moving and there is enough light to identify them. Finally, sunrise occurs when the top of the sun pops over the horizon. Sunrise, of course, is a misnomer, since the sun is stationary. Astronomer Nicolaus Copernicus figured that out nearly 500 years ago. The great ball of fire 94 million miles away only appears to rise because Earth rotates.