From Jason Fowler

This is why you leave owls alone when they are on eggs. People think the owl isn't stressed standing under her talking loudly with other people.

I haven't left this branch in 19 days.

It's 4°F. The wind is 25 mph. The wind chill is -15°F. (That's -15C, 40 kmh, and -26C respectively.)

I am a Great Horned Owl, and I am incubating three eggs that cannot survive one hour without my body heat.

- I cannot leave to hunt. My mate brings me food, when he can find it.

- I've lost 15% of my body weight since I started sitting.

-My feathers are caked with ice. I cannot preen.

- I rotate my eggs every 30 minutes, even at 3 AM.

- I have 9 more days of this before they hatch.

Beneath me, three heartbeats depend on my stillness. If I leave for 20 minutes, they die. If I shift wrong, they freeze on one side. If a predator comes, I must fight without abandoning the nest.

Motherhood is not a feeling. It is a 28-day siege.