LOS ANGELES — Denver Holt has been studying the long-eared owl for 27 years. He’s banded more than 1,700 of the birds and found 225 nests in Montana.

But he’s never been able to see what the nocturnal birds do at night until now.

An infrared camera and microphone on top of a pole in willow thickets on Montana rangeland is aimed at a long-eared owl nest. Holt, founder and director of the Owl Research Institute in Charlo, believes there are four or five eggs in the nest.

He can’t wait to see how the birds share child-rearing, how they interact with other species and how many naps they take during the night.

“There are only so many animals in the world admired by masses of people. There are penguins, some bears, whales and owls,” Holt said.

The 24/7 long-eared owl cam went live Thursday and is believed to be the first ever set up in the wild, Holt said. It is part of an explore.org Internet initiative, underwritten by the Santa Monica-based Annenberg Foundation.

The birds can be found throughout North America and Europe, “but because they are nocturnal and studies are so few, we don’t have a good handle on what is going on in the populations.”

So what do cam watchers have to look forward to?

The female laid her eggs a few days apart, so the births will be staggered, too. The chicks will start getting big in two weeks and in three, the mother will start sitting outside the nest. A few days more and the chicks will screech for their food.

Soon the babies will start branching or climbing clumsily onto branches above the nest. They will fall, but also keep moving further from the nest. Their screaming demands for food will grow louder, Holt said.

It is likely the birds will move out of camera range as they venture further away. When the mother owl is finished nesting, when the chicks are around 11 weeks old, she will take off and “most of the time, we never see the female again.” The father owl will continue to feed the chicks until they leave, again in a staggered sequence.

“Predation influences leaving the nest as early as possible,” Holt said, describing the hazards of a raccoon invasion.

Long-eared owls will live five to 10 years.

The institute will keep the cam trained on the nest until there is nothing left to see, Holt said.

The Pearls of the Planet series has put cameras on osprey, puffins, brown bears and polar bears, generating millions of streaming hours from all over the world, said Charlie Annenberg, the founder of explore.org and vice president and director of the foundation his grandfather Walter Annenberg founded.