Tierra de Oro Laboratory

Physiology and Ecology in the Pinyon-Juniper Savanna

Owls 2025: Getting Started (3/4/25 to 3/29/25)

3/24/25: Getting Started

3/18/25: The next season of The Owls is under way with the first egg laid very late March 18. Here’s a long video of the owls visiting the egg and sitting on it.

3/4/25: The second video shows the tenants damaging the property two weeks ago by pulling the mirror off. I’m shocked at the disrespect.

Just a few nights ago, I went out at night after she left and removed the mirror and added some more mulch for the nest, just in time for the first egg.

3/21/25: “The eggs are fine, get outta here!”
The male seems concerned that the female is not spending more time sitting on the two eggs. After entering the box and looking at the eggs, here he is at the hole hooting for her to return. She arrives, he drops into the box, and she then drives him out and immediately head-butts him out the hole. She checks the eggs briefly, then leaves.

She IS spending a surprising length of time away from the eggs. Two nights ago, she was away for one period of about 5 hours; the next night, away for 3 hours 10 minutes, on the eggs for less than an hour, then away for almost 6 hours. As in the past, I expect she will spend more time as more eggs are laid.